Henry Blake

Main characters

Benjamin "Hawkeye" Pierce

Captain Benjamin Franklin "Hawkeye" Pierce (Jr. in the novel) was played by Donald Sutherland in the film, and by Alan Alda in the television series. A principal character of the series, where between long sessions of treating wounded patients, he is found making wisecracks, drinking heavily, carousing, womanizing, and pulling pranks on the people around him, especially Frank Burns and "Hot Lips" Houlihan. In the novel, he serves as a moral center and author's alter ego, chiding Trapper John for calling Major Houlihan "Hot Lips", which Pierce never does. Although just one of an ensemble of characters in author Richard Hooker's MASH: A Novel About Three Army Doctors, in the television series, Hawkeye became the center of the MASH unit's medical activity. In the television series, he becomes the Chief Surgeon of the unit early in the first season. Alan Alda is the only actor to appear in all 256 episodes of the series.

Pierce was born and raised in New England, most often mentioning Crabapple Cove, Maine, as a place that his family had a summer home and with a few references (primarily in the early seasons) to Vermont. His father graduated from medical school and settled as a doctor in Crabapple Cove in 1911. His mother is deceased and he has a sister (like Vermont, they are mentioned in some early episodes and then never again; although, in season 4, he says he was an only child), and he is close to his father. In the novel and film, Hawkeye is married with children, but in the TV series, he is a bachelor and something of a ladies' man (although he fakes being married to Vanessa Pierce Girlfriend in episode 1/23 "Ceasefire".)

He was given the nickname "Hawkeye" by his father, Benjy (Sr.), in the novel and in the series from the character in the novel The Last of the Mohicans, "the only book my old man ever read". His birth name is taken from a member of Hooker's own family named Franklin Pierce.

Although he had a rather unremarkable boyhood, by his own admission he had had several experiences he never forgot. Once when young, he fell overboard in a pond and nearly drowned as a result of a cruel practical joke, leaving him with lifelong claustrophobia. When he was 14, his father was angered to find him in bed with a girl and smoking a cigarette. When he was 12, he discovered his father was dating a female bookkeeper; to keep his father's attention all to himself, Hawkeye selfishly ruined their relationship so they couldn't marry.

Trapper John McIntyre

Captain "Trapper" John Francis Xavier McIntyre appears in the novels, the film (played by Elliott Gould), the M*A*S*H TV series (played by Wayne Rogers), and the spin-off Trapper John, M.D. series (played by Pernell Roberts). He is one of the main characters in the M*A*S*H TV series during the first three seasons and the central character of the latter series. His nickname comes from an incident in which he was caught having sex with a woman in the lavatory aboard a Boston and Maine Railroad train: she claimed in her defense that "he trapped me!"

In the book and the film, Trapper John is a graduate of Dartmouth College, having played quarterback on the school's football team, and serves as thoracic surgeon of the 4077th. In the film, he has a dry, sardonic, deadpan sense of humor, while in the M*A*S*H television series he is more of a class clown. Trapper spends much of his time on the series engaging in mischief with Hawkeye Pierce, with the two playing practical jokes on Majors Frank Burns and Margaret "Hot Lips" Houlihan, heavy drinking, and trying to seduce women. While Trapper expresses great love for his wife and daughters, he also fraternizes with the nurses a great deal with no pretense of fidelity. He admits frankly that his wife collects his pay for a special fund to pay private investigators who will spy on him, which will begin the second night he gets home from Korea.

In the film, Hawkeye and Trapper are given roughly equal focus, but in the TV series, the character devolved to become more of a sidekick to the character of Hawkeye. This frustrated Rogers, and in combination with a dispute over the terms of the original five-year contract, he quit the show shortly before production of the fourth season began; the character of Trapper was abruptly discharged from the Army and sent back to the United States. The character of B. J. Hunnicutt was created to replace him, with the two-part Season Four opener created to explain his absence (the third episode introducing Col. Potter was intended to be the premiere episode).

The character returned to television in 1979 in the medical drama series Trapper John, M.D. Now played by Pernell Roberts, the character is depicted in the then-present day as the middle-aged Chief of Surgery at a San Francisco hospital. Regarding his family life, he is divorced from his wife; the only mention of his children is that he has a grown son. This version of the character is in continuity with the film rather than the TV series, but no other characters from either production appear in this series, making Trapper John the only M*A*S*H character to be depicted on-screen in the present day at the time of airing. In the first season, McIntyre's chief nurse, nicknamed "Starch", is said to have served with/worked for him in Korea, but never appeared in the novel, movie, or TV series. Trapper John, along with The Mary Tyler Moore Show's Lou Grant, thus became one of a handful of 1970s television characters to be successfully adapted from situation comedy to drama.

B. J. Hunnicutt

Captain B. J. Hunnicutt is played by Mike Farrell in the TV show. He replaced Trapper, both in his position within the unit and as an ally of Hawkeye Pierce and a foil of Frank Burns, appearing in all but one episode of the rest of the series. Although he glibly answers that the initials "B. J." stand for "anything you want", he tells Hawkeye that his name is not an initialism, but simply B. J., derived from the names of his parents, Bea and Jay.

Hunnicutt resided in Mill Valley, California, before he was drafted. He was educated at Stanford University and was a member of the Tau Phi Epsilon fraternity. He is a third-generation doctor in his family. He went through his military training at Fort Sam Houston. When he arrived at MASH 4077 in September 1952 he is 28 years old; later when he meets a medical college friend "Practical Joker" it is revealed that B. J. has been both married and practicing medicine for 10 years.

He is devoted to his wife Peg (née Hayden) who writes many letters to him while he is in Korea. The couple has a daughter, Erin, who was born shortly before B. J. left for Korea. In contrast to the philandering Trapper John, B. J. remains generally faithful to his wife and daughter, saying that it is not because he thinks it's morally wrong to do otherwise, but "I simply don't want to." One time he accidentally had an unplanned one-night stand while comforting a nurse, and was also similarly tempted into having an affair with a visiting female journalist. The nine months he spends in Korea causes him to have an emotional breakdown because of the separation from his wife and child. He is also more reserved than his predecessor, often serving as the voice of reason when Hawkeye goes too far. Nonetheless, he also participates in and initiates practical jokes, such as secretly switching Major Winchester's clothing for that of other soldiers to make him think he is gaining or losing weight, or filling Frank Burns' air raid foxholes with water and then having the visiting Sidney Freedman yell "Air raid!". On other occasions, B. J. encourages members of the 4077th to play jokes on each other, starting escalating joke wars for his amusement, with neither side knowing that he is the instigator. Unfortunately, this has often backfired on him when both parties he was pranking find out and retaliate. B. J. is also an inveterate, bordering on compulsive, punster.

While he assumes the same general disregard for military discipline exhibited by both Hawkeye and Trapper – going as far as to grow out a moustache at the start of the 7th season in clear violation of Army uniform guidelines (and would be retained by the character for the rest of the series, though Farrell would shave it off immediately after the series ended) – B. J. professes stronger moral values. For example, in the episode "Preventative Medicine" he refuses to participate in a scheme to have an overzealous officer relieved of command by performing an unnecessary appendectomy on him. He is a skilled surgeon, willing to take extraordinary measures to save a patient, such as in "Heroes", where he undertakes an experimental procedure he had read about in a medical journal, using a homemade, primitive open-chest defibrillator and open-chest heart massage. On another occasion, he gave away a Bronze Star he was awarded because he felt he did not deserve it.

Henry Blake

Lieutenant Colonel Henry Braymore Blake is introduced in the 1968 novel M*A*S*H, and is also a character in the film (played by Roger Bowen) and television series (played by McLean Stevenson). He is a surgeon and the original commanding officer of the 4077th MASH unit. He is beloved for his down-to-earth, laid-back manner by many under his command, especially Hawkeye and Trapper John (with whom he drinks, flouts regulations, and chases women). However, he is scorned for it by those who prefer strict military discipline, such as Frank Burns and Margaret "Hot Lips" Houlihan.

In the film and novel, he is a career Army physician, having been commissioned before World War II. In the television series, he is 44 years old and a reservist called up to active duty and taken from his private practice in Bloomington, Illinois. Henry attended the University of Illinois Urbana-Champaign, where he was the football team's athletic trainer. He tells Hawkeye he has "a great practice back home", but a "routine" one, and that by serving in Korea, he is doing more doctoring than he would otherwise do in a lifetime. While Henry is in command of the 4077th, his wife – called Mildred in earlier episodes, Lorraine in later ones (the reason is never explained) – gives birth to a son back in Bloomington. Henry would never meet his son. As shown in Episode 2/16, "Henry in Love", Blake holds a Commendation Medal, a Purple Heart, an Army of Occupation Medal, the National Defense Service Medal, the Korean War reCampaign Medal, and the U.N. Service Medal. He describes his wife in unflattering terms as having very expensive false teeth, varicose veins, a fistful of credit cards, looking like Frank Burns in drag, and that he only married her because she was a good cook. (Blake may have been exaggerating; in a home movie sent to the 4077th and then viewed by Blake, Pierce, McIntyre and O'Reilly, Lorraine appears reasonably attractive.)

Likewise, when she wrote to him about being tempted to have an affair with a dentist and that she understood if he was tempted to have an affair, Blake brags to Pierce and Trapper that she had given him permission to have an affair, which she had not. (In fact Blake is a serial adulterer, having interacted with six women, including three M*A*S*H 4077 nurses.)

Henry is a good man and a capable surgeon but unfocused and often ineffective as a commanding officer. In a letter to his father, Hawkeye Pierce describes Henry's lack of leadership ability: "As a commanding officer, it's like being on a sinking liner, running to the bridge, and finding out the captain is Daffy Duck."

Sherman T. Potter

Colonel Sherman Tecumseh Potter appears in the M*A*S*H and AfterMASH television series. He was portrayed by Harry Morgan and replaced the departing character of Henry Blake as commanding officer of the 4077th MASH. The character appeared in all but three of the subsequent episodes.

Potter is from Hannibal, Missouri, one-quarter Cherokee and possesses a passion and fondness for horses. In typical M*A*S*H inconsistency, Potter's birth year was variously mentioned as being 1883 (he claimed to have joined Theodore Roosevelt's "Roughriders" as a marginally legal 15-year-old enlistee in 1898), 1890, or 1900 or 1902. The most plausible date would be 1890. In the Season 10 episode "Pressure Points", Potter tells Sidney Friedman that he is 62 years old. (The 1883 birthdate appears unlikely, since this would have made Potter nearly 70 during the Korean Conflict. The 1900 and 1902 birthdates would indicate he would be only around 49–50 during the Korean War.) Throughout his tenure in the series, it is occasionally mentioned that Potter is "close to retirement."

Potter joined the US Army cavalry as a private during World War I and subsequently rose to the rank of sergeant. Although never deployed as cavalry, the 6th and 15th Cavalry Regiments were sent to France and served in the American Expeditionary Forces in 1918. As the 15th was dismounted and sent into the trenches as infantry to relieve exhausted doughboys, it seems probable Potter saw combat with this battle-hardened unit in the Great War.

Although his career was in the Horse Cavalry until 1924 when he married, he has told stories about being in the Infantry during World War I. During combat in World War I, at the July 1918 Battle of Château-Thierry, he was mustard gassed, leaving him blind for a month in a French hospital. In the September–November 1918 Battle of the Argonne Forest, he was "lost for three days, taken prisoner, head shaved and beaten to a pulp". Several of his teeth were knocked out by his German captors, for which he was later awarded a Purple Heart, one of four he holds: two from World War I, one for his teeth being broken by the Germans and another for having been gassed; one from World War II when his illicit still on Guam blew up on him; and one from Korea, for being shot in the buttocks by a sniper. After the Great War, he went to medical school, and began his service as an Army doctor in 1932, serving in World War II. One of his most cherished possessions is his Good Conduct Medal, an award "only given to enlisted men", Potter explains to Radar while unpacking that he has a "Good Conduct Medal with a clasp." That means he was an enlisted man for at least six years before he becomes a doctor. It is framed and hung behind his desk during his tenure at the 4077th. However, the earliest a soldier in the army was credited towards this award was 1940, and as a physician Potter would have been a commissioned officer and so ineligible for it at the time. He also has claimed to be in two different theaters of War during World War II: In the summer of 1944 on Guam; in December 1944 in the Battle of the Bulge. Potter is married to Mildred, and they have only one daughter and one grandson in some episodes, while in others he has multiple children – including a son born in 1926 who is a dentist – and grandchildren.

Frank Burns

Major (later Lieutenant Colonel) Franklin Delano Marion "Frank" Burns is the executive officer and main antagonist in the film (played by Robert Duvall) and the first five seasons of the television series (Larry Linville). Burns first appeared in the original novel, where he had the rank of captain.

In the novel, Burns is a well-off doctor who attended medical school, but whose training as a surgeon was limited to an apprenticeship with his father in Fort Wayne, Indiana. Nonetheless, he maintains a dismissive attitude toward his better-trained colleagues, blaming others for his failures. He unjustly accuses a rookie orderly, Boone (Bud Cort in the film), of killing one of his patients and nearly kills another patient, earning him retaliatory assaults from Duke and Trapper John. As Burns holds the same rank as Hawkeye in the novel, Blake tries to make sure neither is on duty at the same time, but cannot do so when things get busy. His medical incompetence causes Colonel Blake to instead assign Trapper John as Chief Surgeon. In the novel, the extent of the relationship between Burns and Houlihan is unclear and only rumored to be sexual. In the film, it is overtly sexual and broadcast throughout the camp when Radar puts a microphone under Hot Lips' bunk in her tent. After the "Swampmen" learn that Burns is having an affair with Houlihan, Hawkeye taunts him about it, baiting him to attack just as Blake enters the tent. The next day, Burns is permanently sent away for psychiatric evaluation in a straitjacket, shot full of tranquilizers. In the novel, the confrontation is less violent, and Burns is simply transferred to a VA hospital stateside.

In the film and the subsequent TV series, Frank Burns's rank is that of major. The film version includes elements of the novel's Major Jonathan Hobson, a very religious man who prays for all souls to be saved. In the TV series, he is very high-strung, with a penchant for uttering what are often bizarre or redundant clichés and malapropisms; one example is from "The Interview" (season 4, episode 24), in which Burns describes marriage as "the headstone of American society".

In the TV series, though by military rank Burns is second-in-command of the unit, he is in fact outranked in medical matters by Hawkeye, who reluctantly accepts appointment by Colonel Blake as Chief Surgeon. Burns longs for command of the 4077th himself and resorts to underhanded means in attempting to achieve this end.

Margaret "Hot Lips" Houlihan

Major Margaret "Hot Lips" Houlihan appears in the novel, the film (surname "O'Houlihan" - played by Sally Kellerman), and the TV series (Loretta Swit). She is the Regular Army head nurse of the 4077th and begins allied with Major Frank Burns against the more civilian doctors of the unit. Later in the series, particularly after the departure of Burns, she becomes a more sympathetic character, softening her attitude while still serving as a foil for their antics.

Margaret is a military brat, born in an Army base hospital in 1920, the daughter of career artillery (or cavalry) officer Alvin "Howitzer Al" Houlihan (played by Andrew Duggan in the TV series). The series implies she is ethnic Irish: In the pilot episode Blake refers to her by her full name as O'Houlihan; while Colonel Potter remarks that she comes from a race that likes to settle arguments with their fists ("Souvenirs"). She entered nursing school in 1938 and graduated in 1942 when she joined the Army. She served in World War II but it is unknown if she served stateside or overseas. (On the rare occasions Houlihan is shown wearing her Class A uniform, while her ribbons include the usual Korean War decorations everyone received and commendation medals, she does not have an American Campaign Medal, an Asiatic–Pacific Campaign Medal, or a European–African–Middle Eastern Campaign Medal, a World War II Victory Medal, or an Army of Occupation Medal. However, as a similar omission exists regarding Colonel Potter's decorations, this may simply have been an error by the costume department.) She did mention that she had served in Berlin in 1948.

Her nickname "Hot Lips" has different origins in the original novel, film, and TV show. In the novel, the phrase is first used by Trapper John McIntyre, when he is flirting with Margaret after learning about her affair with Frank Burns. Calling her "Hot Lips", Trapper suggests that they should get together since he has become Chief Surgeon and she is the Chief Nurse. In the film, the nickname originates from a scene in which she has a tryst with Burns. Unbeknownst to them, a hidden PA microphone is broadcasting their conversation to the whole camp, including her growl to Frank, "Kiss my hot lips". In the TV show, the origin of her nickname is never shown or explained in detail, though it seems to refer to various aspects of her passionate nature. Midway through the series, the "Hot Lips" nickname phases out, with characters addressing her as either Margaret or Major Houlihan, though her nickname is still referenced occasionally. For instance, in the sixth-season episode "Patient 4077", when Margaret is in a bad mood after losing her wedding ring, a nurse describes her as "Hot Lips Houlihan: Blonde land mine". In another episode, Colonel Potter was passionately kissed by Margaret after granting her a 72-hour leave to visit her husband in Tokyo; when she turned him loose, he said, "Do you know what I like about a nurse with hot lips? Exactly!" In the seventh-season episode "None Like It Hot", after Margaret talks about a bathtub that is supposed to be kept secret, Hawkeye says to her, "Would you please keep your hot lips sealed?", and in the second part of the two-part eighth-season episode "Good Bye, Radar", Radar says, "Wow! Hot Lips!" after he is kissed by Margaret. She is one of the few Americans in the 4077th who speaks Korean, though most of her Korean seems medically related.

Charles Emerson Winchester III, M.D.

Major Charles Emerson Winchester III is a supporting character in the television series, played by David Ogden Stiers. The name Charles Emerson Winchester was derived from three real street names in the city of Boston. He was introduced in the show's sixth season as a replacement for Frank Burns, both in the unit's surgical team and as a foil for Hawkeye and B. J. Though Winchester embodied some antagonistic qualities similar to Burns such as pompousness and formality, he proved during his time on the series to be a very different character than his predecessor, being far more intelligent, humane, kind, and skilled in surgery. Also, where Burns was always the fall guy and butt of Hawkeye's roasts, jokes, and insults, Winchester often was able to match wits with Hawkeye and even zinged him back, which Hawkeye seemed to actually respect. Winchester's suffix of "the third" was not present in the character's name until season 8.

Charles Winchester was born in his grandmother's house in the Boston, Massachusetts neighborhood of Beacon Hill, and is part of a wealthy family of Republican Boston Brahmins. After finishing his secondary studies at Choate, he graduated summa cum laude class of 1943 from Harvard College (where he lettered in Crew and Polo), completed his M.D. at Harvard Medical in Boston in 1948 (graduating first in his class), and worked at Massachusetts General Hospital. Before he was drafted to join the US Army during the Korean War, he was on track to become chief of cardiothoracic surgery.

Winchester's commanding officer in Tokyo, Colonel Horace Baldwin (Robert Symonds), transferred him to the 4077th on temporary duty in retaliation for the major's gloating attitude about beating him at cribbage for $672.17 (equivalent to about $8,090–$8,990 in 2025, depending on when Winchester was drafted during the Korean War). After Burns ran amok in Seoul on leave and was promoted and transferred back to the United States, Colonel Potter successfully requested Winchester's transfer to the 4077th be made permanent.

Assigned to quarters in "the Swamp" with Hawkeye and B. J., Winchester found the conditions there appalling, calling the camp upon his arrival "an inflamed boil on the buttocks of the world." Keeping with the show's tradition of replacement characters who are in some way the antithesis of their predecessors, Winchester is as skilled a surgeon as Burns was inept – although he had to learn how to perform battlefield medicine, a.k.a. meatball surgery, to increase his efficiency with the large number of critical patients that typically arrived at one time. Winchester does adjust accordingly, although his skill as a surgeon inadvertently frustrates his hope of being transferred back to Tokyo since Colonel Potter considers him too valuable to lose. He is as cultured as Burns was lowbrow; in one episode during a verbal joust with Pierce and Hunnicutt, Winchester matches them true story for true story due to his cultured upbringing and skill, culminating in him revealing he even once dated actress Audrey Hepburn (producing a candid photograph of them as proof) to the astonishment and chagrin of B. J. and Hawkeye. However, Winchester still has to adjust to the realities of field medicine. Although the character was originally intended to develop a romance with Houlihan, the chemistry between the two was not there, so Charles and Margaret maintain a platonic, professional friendship. This showed through when Col. Baldwin came to the camp on an official visit and Winchester tried to curry his favor in hopes of being reassigned. However, when Baldwin mistook Major Houlihan as a prostitute Winchester procured for him and tried to sexually assault her, Baldwin offered to reassign Winchester if he supported his false accusation that Houlihan made advances on him. After much internal struggle, Winchester refused to cooperate and told Colonel Potter everything while finally giving Baldwin his true opinion of him as an insufferable superior, forcing him to leave in public humiliation while Winchester's comrades applauded his act of conscience.

Walter "Radar" O'Reilly

Corporal Walter Eugene "Radar" O'Reilly appears in the novels, film, and TV series. He also appeared in two episodes of AfterMASH, and starred in the television pilot W*A*L*T*E*R. The character was portrayed by Gary Burghoff in both the film and on television, the only regular character played by a single actor. His full name is never given in the original novel or film, but in the TV series it is Walter Eugene O'Reilly, "Walter" being picked by Burghoff himself. The later novels by Richard Hooker and William Butterworth give his name as J. Robespierre O'Reilly.

Radar is from Ottumwa, Iowa, and joined the army right out of high school. This is at odds with his later "graduating" from the Triple A High School Diploma Company of Delavan, Indiana. He has a brother who was rejected by the draft as 4F. He seems to have extra-sensory perception, appearing at his commander's side, with whatever paperwork is required, before being called, and finishing his sentences before the C.O. is anywhere near the end of them. He also has exceptionally good hearing, able to hear helicopters before anyone else and to tell from the rotor sounds if they are coming in loaded or not. It was these abilities that earned him the nickname "Radar". The character is inspired by company clerk Don Shaffer, who also was born in Ottumwa and nicknamed "Radar" by his compatriots, and who served alongside Hornberger in Korea.

In the film, Radar was portrayed as worldly and sneaky, a characterization that carried into the early part of the series. He carries with him a pocketful of passes for any potential scam that might arise and has a racket of selling tickets for spying through a peephole into the nurses' shower. Another time, he cons nearly every member of MASH 4077 into buying two-tone mail-order shoes. As was allegedly done a couple of times in World War II, he successfully mailed a jeep home, one piece at a time. He is known for his tremendous appetite for heaping portions of food, is not averse to drinking Henry Blake's brandy and smoking his cigars when the colonel is off-duty, and occasionally drinks the moonshine liquor Hawkeye and Trapper make in their still.

Soon after the pilot episode, Burghoff noted that the other characters were changing from the film portrayals and decided to follow. He and writer Larry Gelbart evolved Radar into a naïve farm boy, who still sleeps with his teddy bear and whose favorite beverage is Nehi brand grape soda. He has a virginal awkwardness with women despite having been engaged before reporting to the 4077th (his fiancée sent him a "Dear John" record) and a fondness for superhero comic books. In season 3, he remarked that he would be glad to live past age 18, though other ages are given in other episodes, and by then the actor was pushing 30. The show continued to portray him as very young even as his hairline receded (all of the actors would age a decade during this protracted retelling of a three-year war).

Father John Mulcahy

1st Lieutenant (later Captain) "Father" John Patrick Francis Mulcahy, SJ – the order of his given names was not presented consistently in the series – appears in the novel, film (played by René Auberjonois) and TV series (played by William Christopher except in the pilot where he is played by George Morgan). He is a Catholic priest and serves as a US Army chaplain assigned to the 4077th. He was played by George Morgan in the pilot episode of the series, but the producers decided that a quirkier individual was needed for the role.

In the novel and film, Mulcahy is familiarly known by the nickname "Dago Red", a derogatory reference to his Italian–Irish ancestry and the sacramental wine used during Holy Mass. While most of the staff is not religious, they treat Mulcahy with respect. It is Mulcahy who alerts the doctors that the camp dentist "Painless" is severely depressed. Afterward, Mulcahy reluctantly helps the doctors to stage the famous "Last Supper" faux suicide, to convince Painless that he should continue with life. He is bewildered by the doctors' amoral pranks and womanizing behavior, but is usually forgiving of their jokes and sarcastic remarks, commenting once that "humor, after all, was one of His creations". When Radar places a hidden microphone inside Hot Lips's tent as she and Frank Burns have sex, members of the camp listen in, and Mulcahy at first mistakes their conversation (and noises) for an episode of The Bickersons, leaving abruptly when he realizes otherwise.

He is from Philadelphia and is frequently seen wearing a Loyola sweatshirt. He has a sibling, Kathy, who is a Catholic nun. He impishly refers to her as "my sister the Sister". His sister's religious name has been variously stated as Maria Anglica or Theresa. He is an amateur boxer and boxing fan; an old priest and mentor in Jesuit school taught his students that boxing built character and Mulcahy coached boys in the sport at his local CYO chapter before being assigned to the 4077th. There is a running theme that Mulcahy always wins the betting pools and donates his winnings to the local orphanage. On one occasion when asked how he knows what bet to place, he looks to the sky with a smile. His luck at poker is unremarkable however.

Mulcahy understands that many of his "flock" are non-religious or have other faiths, and does not evangelize them overtly. Rather than lecturing from an authority, he seeks to teach by example ("Blood Brothers"), or by helping someone see the error of their ways ("Identity Crisis"). In the early part of the series he was a stock character of comic relief who usually talked about the Korean orphans taken care of by Catholic nuns. Although his quiet faith in God is unshakable, Mulcahy is often troubled over whether his role as chaplain and religious leader has importance compared to the doctors' obvious talent for saving lives. This is despite being told by Cardinal Reardon, a prelate visiting Korea to evaluate the effectiveness of the chaplains serving there, that "you're a tough act to follow" after listening to his sermon concerning a soldier diagnosed with leukemia, at that time a death sentence. This leads him to periodically prove himself, such as volunteering for a dangerous mission to demonstrate his courage to a soldier who had shot himself in the foot to get out of combat duty ("Mulcahy's War"), and putting himself in harm's way to retrieve or negotiate for medical supplies ("Tea and Empathy", "Out of Gas"). He is repeatedly passed over for promotion but eventually rises to the rank of Captain after Colonel Potter intercedes on his behalf ("Captains Outrageous"). Prior to his promotion, in an effort to prove he is worth as much as any of the surgeons or nurses, Chaplain Mulcahy volunteered to serve as the counterweight for an intrepid chopper pilot sent to pick up a soldier with a head wound who needs immediate surgery (the H-13 Sioux helicopters used by the Army could not fly safely unless both stretchers were loaded). Colonel Potter put him in for a commendation, most likely the Commendation Medal with Combat V for Valor. That may have had something to do with his finally receiving his captaincy.

Maxwell Klinger

Corporal (later Sergeant) Maxwell Q. "Max" Klinger appears in the television series M*A*S*H and the spin-off AfterMASH, played by actor Jamie Farr. He serves as an orderly, Sentry and later Company clerk assigned to the 4077th. Klinger was the first main character introduced on M*A*S*H not to have appeared in either the original novel or the subsequent film. Klinger is an Arab-American of Lebanese descent from Toledo, Ohio (like Farr himself). As for Klinger's religion, in an early show, Klinger said he gave up being an atheist for Lent. In real life, Jamie Farr is a devout Antiochian (Greek) Orthodox. In other episodes, Klinger pleads with Allah to help him out of a jam.

In the sixth-season episode "What's Up, Doc?", Klinger is indicated to be 30-years-old. While talking to Colonel Potter, Klinger insists that he needs a hardship discharge, due to him having nine children to support, and shows Potter photos of nine children. Potter points to one of Klinger's alleged children and remarks: "This kid has got to be at least 19. That would mean you were a father at 11."

The character's original defining characteristic was his continual attempts to gain a Section 8 psychiatric discharge from the Army, by habitually wearing women's clothing and engaging in other "crazy" stunts. His first appearance was in the fourth episode, "Chief Surgeon Who?"; in that episode's original script, Klinger was an effeminate gay man ("a silly fag character" as stated by Farr in the documentary Making M*A*S*H), but the writers later agreed that it would be more interesting to have Klinger be heterosexual, but wear dresses in an attempt to gain a Section 8 discharge. Among the characters Klinger has tried to dress up as include the Statue of Liberty, Moses, Zoltan King of the Gypsies, Cleopatra, Snow White, Dorothy from the Wizard of Oz, Scarlett O'Hara from Gone With the Wind; a ballerina, a US Army female nurse, a 1920s flapper, a nun, two Korean women, and a bride. He makes it a point to play up his antics to visiting high-ranking officers in an attempt to gain their sympathy and convince them that he is unfit to serve. When Colonel Potter takes command, Klinger immediately tries the same with him, but Potter sees through the scam immediately. Series writer Larry Gelbart stated during the M*A*S*H 30th Anniversary Reunion special that Klinger's antics were inspired by stories of Lenny Bruce attempting to dodge his military service by dressing himself as a US Navy WAVE.

Klinger eventually gives up his attempts at Section 8 when he is picked by Colonel Potter to become the new company clerk following Radar's discharge. He is later promoted to Sergeant ("Promotion Commotion") and begins to take his duties even more seriously; the writers had decided to "tap into his street skills" to flesh out his character. In the eighth-season episode "Dear Uncle Abdul", Klinger writes to his uncle – who successfully used cross-dressing to stay out of the Army – about the crazy goings-on in camp, ending with the reflection "It's no wonder I never got a Section Eight – there's nothing special about me; everybody here is crazy!" Klinger is a fan of the Toledo Mud Hens, an actual minor league baseball team, and occasionally voices his high opinion of the hot dogs at Tony Packo's, an actual Toledo restaurant. He also enjoys smoking "genuine" Cuban cigars made by Puerto Ricans in New Jersey.

Duke Forrest

Captain Augustus Bedford "Duke" Forrest appears in the novel and the film (played by actor Tom Skerritt). In the book, Duke Forrest is described as under six feet (one point eight metres) tall, with red hair, blue eyes, and 29 years old. He is married with two daughters. As portrayed by Skerritt in the film, he stands at 6 feet 1 inch (185 cm) and is dark-haired. Skerritt was 37 years old at the time.

In both the novel and the film, he is a surgeon assigned to the 4077th, who arrives with Hawkeye. Hailing from the fictional small town of Forrest City, Georgia, Duke ends up sharing a tent with Hawkeye, Frank Burns, and Trapper John. In the film, following the departure of Frank Burns in a straitjacket, Duke carries on a more or less discreet affair with Hot Lips Houlihan (which began while Trapper John and Hawkeye were in Tokyo to operate on a Congressman's son) until he is rotated back to the States to be discharged from the Army.

In the film, when it is proposed that Oliver Harmon "Spearchucker" Jones will bunk with the other surgeons in the Swamp, Duke treats him with disrespect (implied to be because of his Southern heritage), until Hawkeye and Trapper rebuke him. Duke later comes to appreciate Spearchucker's skill as both a surgeon and a former professional football player.

The Duke Forrest character did not appear in the TV series. Skerritt reportedly turned down the offer from 20th Century Fox to reprise his role as Duke on the series because he doubted that a half-hour sitcom adaptation of the film would succeed. In the season 3 episode "Life with Father", Trapper mentions a former 4077th surgeon named Captain Forrest. Hawkeye adds that Forrest left the unit over two years earlier, and now has a toy store.

Lt. Nurse Kellye

1st Lt. Kealani "Kellye" (sometimes referred to as Lt. Nakahara or Lt. Yamato) was portrayed by Kellye Nakahara. She appeared in 86 episodes of the series, more episodes than some main characters, such as Henry Blake and Trapper John. The character grew steadily from a background (often non-speaking) character in the first season to a speaking character with a character arc of her own, culminating in the season 11 episode "Hey, Look Me Over" which was primarily about the character. Her name changed several times before it finally settled on "Nurse Kellye"; for example, she was referred to as "Nurse Able" in her first appearance in "A Full Rich Day". The first name "Kealani" was never spoken on screen, but according to interviews with the actress, that was the first name used on set when referring to the character. She is called "Lt. Nakahara" in the season 10 episode "The Birthday Girls", and in the last regular episode of season 11, the final episode filmed, "As Time Goes By", Major Houlihan calls Kellye "Lt. Nakahara".

Originally from Honolulu, she described herself as "part Chinese, part Hawaiian" in episode 11 of season 8 "Life Time", and speaks Japanese, as revealed in "Communication Breakdown", season 10 episode. She had great pride in her Asian American heritage and frequently took umbrage at racial slurs leveled by Frank Burns. A recurring theme in her appearances is that she is shown dancing in the Officer's Club with nearly every available man in the camp at one point or another. Her family lives in Honolulu according to her statements in the final episode.

Nakahara joined Morgan, Christopher, and Farr on AfterMASH, in which she was the off-camera voice of the public address system at the V.A. hospital.

Recurring characters

Brig. Gen. Hammond

Hammond is a brigadier general who is in charge of several medical outfits, including the 4077th. In both the film and the TV series, Hammond is played by G. Wood, making him one of two actors to reprise his film role in the TV show. (Gary Burghoff is the other.)

In the book, the character's full name is Hamilton Hartington Hammond, and he is stationed in Seoul. In the movie, General Hammond's first name is Charles, and he is very enthusiastic about football, challenging the 4077th to a game against his 325th Evac unit. In the series pilot, it is clear that he is a surgeon as well as an administrator, and his first name is Hamilton. In "Henry Please Come Home" Hammond is personally responsible for Henry's short-lived transfer to Tokyo. In both the film and the series, Hammond has a cordial relationship with Col. Blake. In the film, Hammond is dismissive of Major Houlihan and her negative report about Blake, while in the TV series Houlihan is a sometime lover whom he remembers fondly.

Brig. Gen. Crandall Clayton

Clayton, who appears to have replaced Hammond, is in charge of several medical outfits including the 4077th. He once refers to Henry Blake as "a dear friend", though Blake always addresses him as "General". Clayton has somewhat less of a military bearing than Hammond, and seems to want to balance military expediency with "fatherly advice". He is played by Herb Voland.

Maj. Gen. Maynard M. Mitchell

A general who appears in a few early episodes. In the episode "The Incubator", and in this episode only, he is presented as a fool, answering questions of reporters in military double talk. In "Officers Only", he is the grateful father of a wounded soldier who arranges with Maj. Burns for the construction of an Officers' Club. Played by Robert F. Simon.

Colonel Samuel Flagg

Lieutenant Colonel (later Colonel) Samuel Flagg is played by Edward Winter. Flagg is an American intelligence agent who acts paranoid and irrational and appears to the staff of the 4077th Mobile Army Surgical Hospital to be mentally unstable. He alternately claims to be affiliated with the CIA, the CIC, or the CID. Other aliases include Major Brooks, Captain Louise Klein, Lieutenant Carter, Ensign Troy, and Chaplain Goldberg.

Flagg appears in six M*A*S*H episodes:

"A Smattering of Intelligence",

"Officer of the Day",

White Gold,

"Quo Vadis, Captain Chandler?",

"The Abduction of Margaret Houlihan",

"Rally 'Round the Flagg, Boys".

Before playing Flagg, Winter played a similar character named Captain Halloran in the episode "Deal Me Out". However, most fans of the show claim this is actually Flagg's first appearance, with Halloran simply being one of Flagg's many aliases. This is supported by a comment made by Flagg to psychiatrist Sidney Freedman in "Quo Vadis, Captain Chandler?", who also appears in "Deal Me Out".

Flagg resurfaces a few years after the war, in a Hannibal, Missouri courtroom (as seen in the AfterMASH episode "Trials").

Lt. Col. Donald Penobscott

Lieutenant Colonel Donald Penobscott was played by two actors, Beeson Carroll and former football player and Tarzan actor Mike Henry.

Donald is introduced in name only at the start of the fifth season. Tall, dark, handsome, and muscular, he is a graduate of West Point whom Major Margaret "Hot Lips" Houlihan (Loretta Swit) meets while she is on leave in Tokyo. She falls in love with him on the spot, and he quickly asks her to marry him. Margaret promptly accepts, leading to a falling out with her former flame Frank Burns.

Penobscott is not seen until the season-ending episode "Margaret's Marriage", wherein Donald (played by Carroll) arrives to marry Margaret at the 4077th. Hawkeye and B. J. have a bachelor party for him, and after he passes out from drunkenness, the hosts, also inebriated, decide to play a joke on Penobscott by plastering him from his chest to his toes, intending to tell him that he had broken both his legs during the night. The cast is still on during the wedding ceremony, and he is unable to move without assistance. The wedding is cut short by incoming wounded, which leaves Donald in the mess hall, unable to move in his body cast. As Margaret leaves for her honeymoon, Hawkeye and B. J. make a halfhearted attempt to tell her that the cast could be removed, but she doesn't hear them over the sound of the helicopter in which they are departing.

He is not seen again until the sixth-season episode "The M*A*S*H Olympics", in which Donald (played this time by Henry) arrives to visit Margaret and ends up taking part in the 4077th's amateur Olympics competition; he almost wins a race against portly Sgt. First Class Ames, but Penobscott gets tangled in a camouflage net while showing off.

He is mentioned frequently throughout the sixth and seventh seasons, particularly about problems Margaret and Donald are having. For example, in the episode "In Love and War", a new nurse arrives at the 4077th. After saying she was recently involved with a colonel named Donald, Margaret comes to conclude he has cheated on her, and she flies into a rage against the nurse. In "Comrades in Arms", Margaret receives a letter from Donald that was meant for another woman – a letter that says unkind things about Margaret and hints at Donald having an affair with the other woman. Finally, in the season seven episode "Peace on Us", Margaret announces she's getting a divorce due to Donald arranging a transfer to San Francisco without telling her. Margaret receives her official divorce decree from Donald in the episode "Hot Lips is Back in Town".

Major Sidney Freedman

Major Sidney Theodore Freedman, played by Allan Arbus, is a psychiatrist summoned in cases of mental health problems. In the M*A*S*H 30th Anniversary Special that aired on Fox in 2002, Arbus was the only non-regular cast member to be featured on the special.

Freedman's first appearance was in the episode "Radar's Report", as Milton Freedman. He visited the camp to do a psychiatric evaluation of Klinger, who was aiming for a Section 8 discharge. After Freedman had finished the report, he quietly took Klinger in for an interview and told him that while Klinger was not mentally ill, he was willing to declare him a transvestite and a homosexual. These labels would not leave him, though; as Sidney put it: "From now on, you go through life on high heels." Klinger vociferously denied, "I ain't any of those things! I'm just crazy!" Klinger's discharge was dropped, and Freedman left the camp.

Freedman appears in 12 M*A*S*H episodes:

"Radar's Report" (as Milton Freedman),

"Deal Me Out", "O.R.",

"Quo Vadis, Captain Chandler?",

"Dear Sigmund",

"Hawk's Nightmare",

"War of Nerves" (in which he qualified for a Purple Heart by being wounded while performing therapy follow-up on one of his patients),

"The Billfold Syndrome",

"Goodbye, Cruel World",

"Bless You, Hawkeye",

"Pressure Points", and the series finale,

"Goodbye, Farewell and Amen".

He is also mentioned, but does not appear onscreen, in the episodes "Mad Dogs and Servicemen", "Heal Thyself", "A Holy Mess", and "Trick or Treatment".

Capt. Spearchucker Jones

Captain Oliver Harmon "Spearchucker" Jones is a character who appears in the novel MASH (and its sequels), and was portrayed by Fred Williamson in the movie and Timothy Brown in the television series. In all iterations, the Spearchucker character is a superior surgeon who was also a stand-out collegiate athlete. "Spearchucker", a common racial slur, is said to refer in this case to his javelin-throwing prowess. Initially, he is transferred to the 4077th to help them win a football game (Jones is said to have played with the NFL's San Francisco 49ers) against the 321st Evac Hospital. In the novel, it is related that while a poorly paid resident, he had been scouted by the Philadelphia Eagles playing semi-professional football in New Jersey for extra cash, and had been signed by the Eagles, playing with them until he was drafted. Coincidentally, actor Timothy Brown played most of his nine-year NFL career with Philadelphia and was selected to the team's Hall of Fame in 1990.

It is established in the novel that Jones is from Duke Forrest's hometown of Forest Park, Georgia, and knew Duke's father. Duke makes racist comments about Jones, causing Hawkeye and Trapper to punish Duke. In the sequel novels, particularly M*A*S*H Goes to Maine, Jones joins the other doctors in their practice in Spruce Harbor, Maine, becoming a highly successful doctor and prominent citizen.

The character's middle name was Harmon in the film and Wendell in the novels. He is a board-certified neurosurgeon in the film, and in Episode 1/04, "Chief Surgeon Who?" in which Hawkeye is named Chief Surgeon of the 4077th, Spearchucker's specialty is indicated as he struggles to do other types of surgery. When he asks Hawkeye for help, he says, "Anything outside the skull, I'm dead."

Spearchucker was shown during several episodes during the first season of the series. His full name was never mentioned in the series. He was one of the original Swampmen with Trapper, Hawkeye, and Frank Burns, and was the sole black surgeon at the 4077th. In the pilot episode, to raise funds for Ho-Jon's education, Trapper "jokingly" suggests selling Spearchucker. During his brief run on the show, it was implied that he and nurse Ginger Bayliss (played by Odessa Cleveland) were romantically involved.

Spearchucker's role was limited. It is implied he assisted Hawkeye and Trapper in their schemes on the sidelines. The producers decided to drop the character after the first few episodes, reasoning that they wouldn't be able to write enough meaningful episodes for Spearchucker if they were concentrating on Hawkeye and Trapper. Some accounts assert the producers were unable to find evidence for black Army surgeons in Korea; there were, however, several black surgeons who served in the US military at the time.

Capt. Ugly John Black

Captain "Ugly" John Black was portrayed by Carl Gottlieb in the movie, and John Orchard in the TV series. The character on the television show was an anesthesiologist from Australia, often depicted wearing an Australian slouch hat. In the book, he was an American who had "trained in the States with McIntyre". In the film, he is an American (as he can be seen wearing the insignia of a US Army Captain), but his background is not discussed. In the TV series, Ugly John was present only in the first season. He began as a significant supporting member of the cast, often engaged in poker games with Hawkeye and Trapper, but by the end of the season, he was rarely seen outside brief O.R. scenes.

Ugly John was never seen living in "The Swamp" and there was no fifth bunk, though it was the only quarters for subordinate male officers ever seen. In the episode "Sometimes You Hear the Bullet", Hawkeye says that he shares a tent with three other doctors. The script was likely written before Spearchucker was dropped and the writers presumably overlooked editing that line of dialogue. However, Ugly John was still a recurring character, and may have been one of the "three other doctors". John Orchard later returned to the show for the Season 8 episode "Captains Outrageous", this time playing a drunken and corrupt Australian Military Policeman "Sgt. Muldoon".

Lt. Ginger Bayliss

Played by Odessa Cleveland on the TV series, Ginger is one of few nurses to have a recurring, speaking role in the series as the same character. Ginger appears to be a competent nurse who is well-liked by the medical staff but occasionally runs afoul of Frank Burns who blames her for his mistakes, leading to Hawkeye and Trapper coming to her defense by pulling pranks on Frank.

Ginger is a Regular Army Lieutenant but is not a stickler for rules or military discipline like Major Houlihan. She is frequently seen fraternizing with Trapper and Spearchucker, even playing a game of "strip dominoes" with the latter in the first-season episode, "Chief Surgeon Who?".

In the first-season episode "Major Fred C. Dobbs", Ginger is working with Frank in the O.R. When Frank botches his work, he blames Ginger and tells Maj. Houlihan that Ginger is, "an incompetent bungler. I never want her at my table again!" Ginger is brought to tears by Frank's verbal assault prompting Hawkeye and Trapper to encase Frank's right arm in plaster capped with a metal retractor while Frank is sleeping.

One of Ginger's most prominent roles comes in the season 2 episode, "Dear Dad ... Three" where a wounded soldier requests that he be given blood only from white donors. Hawkeye and Trapper decide to teach him a lesson by tinting his skin darker while he is sedated and subsequently referring to him as "boy" and bringing him fried chicken and watermelon to eat. When Ginger is doing her rounds in post-op, she looks at his chart and says, "They've got you down as white. Good job, baby!" When he angrily lashes out at her, she pulls rank on him, warning: "I'm a lieutenant, soldier. I don't care if you are passing, watch your mouth." Later, when Trapper and Hawkeye explain to the soldier that all blood is the same, he reflects upon his behavior. As he prepares to depart the 4077th to rejoin his unit, he thanks the doctors then turns and salutes Ginger, who returns the salute and wishes him well.

Ginger's last appearance was in the season 4 episode, "The Late Captain Pierce". All told, Cleveland appeared in 25 episodes of M*A*S*H spanning seasons 1–4.

Lt. Peggy Bigelow

Lt. Peggy Bigelow was played by Enid Kent, appearing in seasons five through seven, then returning for two episodes (including the finale) for season eleven. She first appears in the fifth-season episode "Out of Sight, Out of Mind." In the season six episode "In Love and War", Bigelow gives her first name as "Peggy". In another season six episode, "Images", Bigelow mentions that she used to be an E.R. nurse in Chicago. However, Bigelow is not originally from Chicago, as she mentions that she is from Beaver Falls, Pennsylvania in the season seven episode "Hot Lips is Back in Town". In many episodes, for instance the season seven episode "They Call the Wind Korea", Bigelow is shown to have a flirtatious relationship with Hawkeye.

Bigelow is absent in seasons 8–10, but returns in the season eleven episode "Who Knew?". She also appears in "Goodbye, Farewell and Amen", where the various characters talk about what they will do now that the war is over. Bigelow instead mentions that she had been a nurse at the tail-end of World War Two. Between that, and her service in Korea, Bigelow indicates that she suffers from burnout. Her post-war plans and life are left unsaid in the episode.

Lt. Dish

1st Lieutenant Maria "Dish" Schneider was played by Jo Ann Pflug in the film and (as Lt. Maggie Dish) by Karen Philipp in the series. She was a nurse at the 4077th MASH during the Korean War.

Dish's role in the finished film was limited, as a large portion of her role did not make the final cut. The same thing happened to the character in the television series. After being prominently featured as Hawkeye's love interest in the pilot, she appeared in only one further episode (Episode 1/11) before leaving the show entirely. However, she continued to be featured in the opening credit montage sequence (wherein the MASH staff runs toward approaching helicopters) for most of the show's run.

Lt. Nancy Griffin

Nurse Griffin was played by Lynnette Mettey and appeared in three episodes during the first season as one of Hawkeye's romantic partners. She also appeared in three other episodes portraying other characters.

Lt. Margie Cutler

A nurse introduced as a new transfer in the episode "Requiem for a Lightweight". She immediately attracts the attention of both Hawkeye and Trapper, so much so that Maj. Houlihan wants her transferred again immediately. In the same episode, Trapper agrees to participate in a boxing match with a fighter from another outfit in exchange for a promise by Henry Blake that Cutler will be kept at the 4077th. Despite Trapper's efforts, however, she becomes romantically linked with Hawkeye in a few episodes. Cutler was played by actress/singer Marcia Strassman.

Lt. Leslie Scorch

A nurse at the 4077th, and Henry Blake's paramour during much of the first season, and is at his side through much of the pilot. She is good-natured and has a bubbly personality. Played by Linda Meiklejohn.

Lt. Barbara Bannerman

A nurse at the 4077th, who at times casually dates both Hawkeye and Trapper. Played by Bonnie Jones, at that time the wife of M*A*S*H producer Gene Reynolds. Seen only during season one.

Staff Sergeant Luther Rizzo

Staff Sergeant Luther Wilson Rizzo was played by G. W. Bailey. In the show, he was the sergeant in charge of the motor pool. While originally written to be from New York City, when the producers heard Bailey's southern accent in his first dailies his character was moved to Louisiana. He was known for his slow, deep, Louisiana drawl (Bailey himself is in fact Texan) and his slightly disheveled look. Though the motor pool seemed to function well, it did so despite Rizzo's casual work style and frequent naps. His philosophy on success in the army was that it was possible to never do work, so long as your superiors don't see you enjoy yourself: "Where else [but the Army] can you be a bum and get paid for it?"

In the Season 10 episode "Promotion Commotion", Rizzo was one of three 4077th enlisted who appeared before a promotion board consisting of Hawkeye, B. J., and Winchester. He was not promoted, but made it clear that he was American "with an American wife and American son, Billy Bubba". In Episode 10/21 his first name is given as "Wilson".

Rizzo enjoys shooting craps and seems to win more than he loses. He also is the camp loan shark, getting Charles on his hook at one point to the extent he had to have money sent from home to clear his debt with the cigar-chewing sergeant.

Sergeant Rizzo is known to carry a grudge. On one occasion, he borrowed a dummy hand grenade from Igor and used it to scare B. J. out of the shower after giving him a hard time. When Rizzo was found out, Charles played a prank and as Rizzo threw the grenade in the Swamp, Charles dove onto the inactive grenade stunning Rizzo. He had harsh words with Winchester when the latter, acting as motor pool officer, required him to completely disassemble a jeep's engine and lay it out on white sheets, for no good reason that Rizzo could see.

In the series finale, at the 4077th's final dinner Rizzo claimed that he would be going home to work on a new moneymaking venture: breeding frogs to sell to French restaurants. However, this was a minor error as Rizzo had re-enlisted in the Army in a previous episode. He is last seen driving Major Charles Emerson Winchester III in a military garbage dump truck away from the 4077th unit in the series finale.

Staff Sergeant Zelmo Zale

Staff Sergeant Zelmo Zale was portrayed by Johnny Haymer. Zale is the supply sergeant for the 4077th MASH and also is the camp's electrician; he is shown trying to keep the camp's generator going until it blows up. He is responsible for repairing the jukebox in the officers' club after the Marines bust it up. In the episode "Patent 4077", Zale describes himself as a master craftsman. He mentions in one episode that he is from Brooklyn. He makes his first appearance in the Season 2 episode, "For Want of a Boot", and his final appearance in the Season 8 episode, "Good-Bye Radar" (which also marked Gary Burghoff's last appearance on the show as Corporal Radar O'Reilly). Zale's name is mentioned for the final time in "Yes Sir, That's Our Baby". A running gag is his feud with Corporal Maxwell Klinger – once Klinger hit Zale for insulting the Toledo Mud Hens and is put on KP for a whole month. Another time Major Burns manipulates Klinger and Zale into a boxing match, which results in Burns being knocked out by both men.

Sgt. "Sparky" Pryor

Sparky is the mostly unseen telephone/radio operator at headquarters. His nickname is probably a carry-over from the days of telegraphy. Radar almost always needs to go through Sparky when he makes a call to Seoul, Japan, or the US. (Sparky seems to be at his desk around the clock). Sometimes, for special calls, Sparky requires a bribe to arrange the connection. The character is seen and heard only once, in the first-season episode "Tuttle". This is also the only time his rank and real name are mentioned. He is portrayed by Dennis Fimple, who plays him with a noticeable Southern US accent.

Ho-Jon

Ho-Jon was portrayed by Kim Atwood in the film, and Patrick Adiarte in the series. In the original novel, Ho-Jon is described as a 17-year-old Korean, tall, thin, bright, Christian, and living in Seoul. He was drafted into the South Korean army, subsequently, wounded and sent back to the 4077th for treatment. After rehabilitation, he resumes his position as "Swampboy". The Swampmen, who are very fond of Ho-Jon, arrange to have him sent to Hawkeye's old college in the US. To raise funds, Trapper grows a beard, poses as Jesus Christ (complete with a cross mounted on a jeep or hanging from a helicopter), and autographs thousands of photos which the Swampmen sell for a dollar apiece. In M*A*S*H Goes to Maine, Ho-Jon is briefly seen again, having pursued a successful career in university administration. In M*A*S*H Mania, he is shown to have become the director of admissions at Androscoggin College (Hawkeye's alma mater).

In the film, Ho-Jon is drafted, and Hawkeye drives him to the induction center. The Korean doctor who examines Ho-Jon discovers that Hawkeye has given him drugs to induce hypertension and tachycardia (so that he will fail the induction physical). Ho-Jon is last seen in the film being led away by South Korean soldiers while the doctor tells Hawkeye that he has seen through the trick.

In the screenplay, Ho-Jon is wounded and sent to the 4077th; however, his surgery is unsuccessful, and he dies. The completed film omits this storyline, although a scene showing Ho-Jon in the operating room remains with overdubbed dialogue (Houlihan: "That man's a prisoner of war, Doctor." Trapper: "So are you, Sweetheart, but you don't know it.") and a scene showing a jeep driving off with the deceased Ho-Jon, causing a brief pause in the poker game.

In the pilot episode, Ho-Jon is accepted at Hawkeye's old college, just as in the novel. In the TV version, the doctors raise funds for him by raffling off a weekend pass to Tokyo with Nurse Dish.

In the episode "I Hate a Mystery", Ho-Jon steals many valuable items and Hawkeye's poker winnings to bribe the border guards to bring his family down from the North. This contrasts with an incident in the pilot where he receives his college acceptance letter and leaves to tell his parents, who presumably live nearby.

Pvt. Igor Straminsky

Private Igor Straminsky was generally portrayed by actor Jeff Maxwell, although Peter Riegert played him in two sixth-season episodes. The character of Igor (by name) debuted in the second season and appeared sporadically until the series finale. Igor was seen in 48 episodes, the second most frequent recurring character after Nurse Kellye (portrayed by Kellye Nakahara) who appeared in 167 episodes.

Igor's role is generally comic relief. He is usually seen serving food in the mess tent and also serving as the foil for the frequent complaints about the unappetizing state of the food. He is also sometimes tasked with duties with Radar, as seen in the season 5 episode "Mulcahy's War".

In "Promotion Commotion", Igor relentlessly tries to impress Hawkeye and B. J., so he can be promoted to Corporal. He once mentioned to Father Mulcahy that he sets aside three dollars from each salary payment for the local orphanage.

In "The Price of Tomato Juice", Igor identifies himself as "Maxwell".

Igor became a favorite with both the fan base and the network. In later seasons, his roles were expanding, making him more of a recurring cast member.

His name is a play on the name of the Russian classical music composer, Igor Stravinsky.

Maxwell himself was primarily on set every day as the stand in for Alan Alda, performing this task for the duration of the series.

Pvt. Lorenzo Boone

A hospital orderly who is innocent and not especially bright. In the movie, he is played by Bud Cort, and Boone's humiliation at the hands of Maj. Burns leads to Trapper striking Burns later that day. In the TV series, he is first played by Bruno Kirby, though only in the pilot (in which he has no lines, is not spoken to, and is only visible in the background of a few shots), although he is seen in the opening credits for the duration of the series as the soldier who stumbles on the way up the hill to the helicopter pad. The character of "Boone" appears in a handful of episodes as a very minor character, played by Bob Gooden.

Roy Goldman

Roy Goldman (portrayed by and named after actor Roy Goldman) is a medic who is assigned various duties at the 4077th. His name was not set for several seasons. In "Officer of the Day", while with another soldier, he is referred to as either Carter or Willis (it is not clear which of the two is which). He is also referred to in one episode, perhaps jokingly, as Fred. Later the name "Goldman" was firmly established as his own. He is first called "Roy" by Corporal Max Klinger in "The Trial of Henry Blake" while appearing as an MP. He is usually seen in a non-medical setting (such as guard duty), though he also does chores within the hospital.

Goldman appears off and on throughout the run of the series, usually when a soldier is needed for a random line or reaction. When Hawkeye walks into the mess tent naked, for example, Goldman is the first one to notice, dropping his metal tray in shock. He rarely has more than one or two lines, though in the episode "The Red/White Blues", his reaction to a medication is an important plot point and he speaks quite a bit more.

The actor himself not only served as an extra and the "Roy Goldman" character, but was primarily on-set for the duration of the series as the stand in for Gary Burghoff, as they had similar stature and skin tone.

Dennis Troy

Like Roy, he is a corpsman. He is sometimes seen together with Roy, and sometimes he is a jeep driver. Dennis has glasses and straight, light hair, and usually has a mustache. Dennis rarely speaks, and never beyond a few words. In one episode, "Officer of the Day", he appears with another soldier and his last name is said to be Carter or Willis (it is unclear who is being referred to). One of those names, however, applies to Roy Goldman (see above), thus one can assume that the name was merely a one-time usage.

Perhaps because his appearances are so fleeting, the production staff may have been felt that Troy could be seen without distraction to the audience in settings other than the 4077th. In the episodes "For the Good of the Outfit" and "Dr. Pierce and Mr. Hyde", Dennis is General Clayton's jeep driver. In "Bombshells", he is an ambulance driver for the 8063rd MASH and does not seem to recognize B. J. Hunnicutt.

The actor himself not only served as an extra and the "Dennis Troy" character, but was primarily on-set for the duration of the series as the stand in for McLean Stevenson, Wayne Rogers, then Mike Farrell, and Larry Linville, as they had similar stature and skin tone.

Pvt. Frank Daley/Daily

An African American private with a mustache who is occasionally seen in group shots in early seasons. His name is only mentioned in the episode "Payday", though Hawkeye jokingly introduces him as his "brother-in-law Leroy" at the Officer's Club.

PA Announcer

The announcer on the public address system is heard throughout the film and in most episodes of the series. For the film, the voice is sometimes listed as that of Marvin Miller and sometimes as that of David Arkin, who played Staff Sergeant Vollmer. (The absence of Miller's considerable baritone resonance would suggest the latter.) There were a few different voices in the series, among them Todd Susman's and Sal Viscuso's as well as Jamie Farr, marking Corporal Klinger's arrival from the first episode, albeit unseen.

In the series, it is unknown where on the base the PA announcer is posted, as Radar is the only one seen in control of the radio and PA system. In the episode "A Full Rich Day", Blake says, "Tony, hit it", cueing the national anthem of Luxembourg over the PA – Tony could have been the name of the announcer starting a record or the name of a "live" pianist.

Capt. Spaulding

Capt. Calvin Spaulding, played by Loudon Wainwright III, is a guitar-playing and singing surgeon who appeared in three episodes in season three (1974–75), "Rainbow Bridge", "There is Nothing Like a Nurse", and "Big Mac". The character's name is a reference to the character "Captain Spaulding" played by Groucho Marx in the film Animal Crackers.