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Origins

The Continental Army was created on 14 June 1775 by the Second Continental Congress as a unified army for the colonies to fight Great Britain, with George Washington appointed as its commander. The army was initially led by men who had served in the British Army or colonial militias and who brought much of British military heritage with them. As the Revolutionary War progressed, French aid, resources, and military thinking helped shape the new army. A number of European soldiers came on their own to help, such as Friedrich Wilhelm von Steuben, who taught Prussian Army tactics and organizational skills.

The Army fought numerous pitched battles, and sometimes used Fabian strategy and hit-and-run tactics in the South in 1780 and 1781; under Major General Nathanael Greene, it hit where the British were weakest to wear down their forces. Washington led victories against the British at Trenton and Princeton, but lost a series of battles in the New York and New Jersey campaign in 1776 and the Philadelphia campaign in 1777. With a decisive victory at Yorktown and the help of the French, the Continental Army prevailed against the British.

After the war, the Continental Army was quickly given land certificates and disbanded in a reflection of the republican distrust of standing armies. State militias became the new nation's sole ground army, except a regiment to guard the Western Frontier and one battery of artillery guarding West Point's arsenal. However, because of continuing conflict with Native Americans, it was soon considered necessary to field a trained standing army. The Regular Army was at first very small and after General St. Clair's defeat at the Battle of the Wabash, where more than 800 soldiers were killed, the Regular Army was reorganized as the Legion of the United States, established in 1791 and renamed the United States Army in 1796.

In 1798, during the Quasi-War with France, the U.S. Congress established a three-year "Provisional Army" of 10,000 men, consisting of twelve regiments of infantry and six troops of light dragoons. In March 1799, Congress created an "Eventual Army" of 30,000 men, including three regiments of cavalry. Both "armies" existed only on paper, but equipment for 3,000 men and horses was procured and stored.

19th century

The War of 1812 was the second and last war between the United States and Great Britain. The war was split between a Northern, Southern, and naval campaign. While a large part of the war was fought between the United States and Great Britain, there were a variety of native tribes that fought on both sides of the conflict. The result of the war is the Treaty of Ghent and is generally considered to be inconclusive, and brought upon a period of peace between the United States and Great Britain that has lasted for over two centuries.

There was a long period of war between the United States and the Seminoles that lasted over 50 years. The usual strategies utilized against Native American tribes were to seize winter food supplies and to form alliances with enemies of a tribe. These were not viable options against the Seminoles, largely due to the fact of lack of climate variability in Florida and because of the long history of warring between the Seminole tribe and other tribes in the Florida region.

The U.S. Army fought and won the Mexican–American War, which was a defining event for both countries. The U.S. victory resulted in the Treaty of Guadalupe Hidalgo, in which Mexico ceded a large portion of land to the United States which included the modern-day states of California, Nevada, New Mexico, Arizona, Texas, and parts of Colorado and Wyoming.

The American Civil War was the costliest war for the U.S. in terms of casualties. After most slave states, located in the southern U.S., formed the Confederate States, the Confederate States Army, led by former U.S. Army officers, mobilized a large fraction of Southern white manpower. Forces of the United States (the "Union" or "the North") formed the Union Army, consisting of a small body of regular army units and a large body of volunteer units raised from every state, north and south, except South Carolina.

For the first two years, Confederate forces did well in set battles but lost control of the border states. The Confederates had the advantage of defending a large territory in an area where disease caused twice as many deaths as combat. The Union pursued a strategy of seizing the coastline, blockading the ports, and taking control of the river systems. By 1863, the Confederacy was being strangled. Its eastern armies fought well, but the western armies were defeated one after another until the Union forces captured New Orleans in 1862 along with the Tennessee River. In the Vicksburg Campaign of 1862–1863, General Ulysses Grant seized the Mississippi River and cut off the Southwest. Grant took command of Union forces in 1864 and after a series of battles with very heavy casualties, he had General Robert E. Lee under siege in Richmond as General William T. Sherman captured Atlanta and marched through Georgia and the Carolinas. The Confederate capital was abandoned in April 1865 and Lee subsequently surrendered his army at Appomattox Court House. All other Confederate armies surrendered within a few months.

The war remains the deadliest conflict in U.S. history, resulting in the deaths of 620,000 men on both sides. Based on 1860 census figures, 8% of all white males aged 13 to 43 died in the war, including 6.4% in the North and 18% in the South.

Following the Civil War, the U.S. Army had the mission of containing western tribes of Native Americans on the Indian reservations. They set up many forts, and engaged in the last of the American Indian Wars. U.S. Army troops also occupied several Southern states during the Reconstruction Era to protect freedmen.

The key battles of the Spanish–American War of 1898 were fought by the Navy. Using mostly new volunteers, the U.S. forces defeated Spain in land campaigns in Cuba and played the central role in the Philippine–American War.

20th century

Starting in 1910, the army began acquiring fixed-wing aircraft. In 1910, during the Mexican Revolution, the army was deployed to U.S. towns near the border to ensure the safety of lives and property. In 1916, Pancho Villa, a major rebel leader, attacked Columbus, New Mexico, prompting a U.S. intervention in Mexico until 7 February 1917. They fought the rebels and the Mexican federal troops until 1918.

The United States joined World War I as an "Associated Power" in 1917 on the side of Britain, France, Russia, Italy and the other Allies. U.S. troops were sent to the Western Front and were involved in the last offensives that ended the war. With the armistice in November 1918, the army once again decreased its forces.

In 1939, estimates of the Army's strength ranged between 174,000 and 200,000 soldiers, smaller than that of Portugal's, which ranked it 17th or 19th in the world in size. General George C. Marshall became Army chief of staff in September 1939 and set about expanding and modernizing the Army in preparation for war.

The United States joined World War II in December 1941 after the Japanese attack on Pearl Harbor. Some 11 million Americans were to serve in various Army operations. On the European front, U.S. Army troops formed a significant portion of the forces that landed in French North Africa and took Tunisia and then moved on to Sicily and later fought in Italy. In the June 1944 landings in northern France and in the subsequent liberation of Europe and defeat of Nazi Germany, millions of U.S. Army troops played a central role. In 1947, the number of soldiers in the US Army had decreased from eight million in 1945 to 684,000 soldiers and the total number of active divisions had dropped from 89 to 12. The leaders of the Army saw this demobilization as a success.

In the Pacific War, U.S. Army Soldiers made up the vast majority of ground forces there, capturing the Pacific Islands from Japanese control. In total, there were 86 amphibious landings throughout the Pacific. The Army conducted 71. Following the Axis surrenders in May (Germany) and August (Japan) of 1945, Army troops were deployed to Japan and Germany to occupy the two defeated nations. Two years after World War II, the Army Air Forces separated from the Army to become the United States Air Force in September 1947. In 1948, the Army was desegregated by order 9981 of President Harry S. Truman.

The end of World War II set the stage for the East–West confrontation known as the Cold War. With the outbreak of the Korean War, concerns over the defense of Western Europe rose. Two corps, V and VII, were reactivated under Seventh United States Army in 1950 and U.S. strength in Europe rose from one division to four. Hundreds of thousands of U.S. troops remained stationed in West Germany, with others in Belgium, the Netherlands and the United Kingdom, until the 1990s in anticipation of a possible Soviet attack.

During the Cold War, U.S. troops and their allies fought communist forces in Korea and Vietnam. The Korean War began in June 1950, when the Soviets walked out of a UN Security Council meeting, removing their possible veto. Under a United Nations umbrella, hundreds of thousands of U.S. troops fought to prevent the takeover of South Korea by North Korea and later to invade the northern nation. After repeated advances and retreats by both sides and the Chinese People's Volunteer Army's entry into the war, the Korean Armistice Agreement returned the peninsula to the status quo in July 1953.

The Vietnam War is often regarded as a low point for the U.S. Army due to the use of drafted personnel, the unpopularity of the war with the U.S. public and frustrating restrictions placed on the military by U.S. political leaders. While U.S. forces had been stationed in South Vietnam since 1959, in intelligence and advising/training roles, they were not deployed in large numbers until 1965, after the Gulf of Tonkin Incident. U.S. forces effectively established and maintained control of the "traditional" battlefield, but they struggled to counter the guerrilla hit and run tactics of the communist Viet Cong and the People's Army of Vietnam (NVA).

During the 1960s, the Department of Defense continued to scrutinize the reserve forces and to question the number of divisions and brigades as well as the redundancy of maintaining two reserve components, the Army National Guard and the Army Reserve. In 1967, Secretary of Defense Robert McNamara decided that 15 combat divisions in the Army National Guard were unnecessary and cut the number to eight divisions (one mechanized infantry, two armored, and five infantry), but increased the number of brigades from seven to 18 (one airborne, one armored, two mechanized infantry and 14 infantry). The loss of the divisions did not sit well with the states. Their objections included the inadequate maneuver element mix for those that remained and the end to the practice of rotating divisional commands among the states that supported them. Under the proposal, the remaining division commanders were to reside in the state of the division base. However, no reduction in total Army National Guard strength was to take place, which convinced the governors to accept the plan. The states reorganized their forces accordingly between 1 December 1967 and 1 May 1968.

The Total Force Policy was adopted by Chief of Staff of the Army General Creighton Abrams in the aftermath of the Vietnam War and involved treating the three components of the army – the Regular Army, the Army National Guard and the Army Reserve as a single force. General Abrams' intertwining of the three components of the army effectively made extended operations impossible without the involvement of both the Army National Guard and Army Reserve in a predominantly combat support role. The army converted to an all-volunteer force with greater emphasis on training to specific performance standards driven by the reforms of General William E. DePuy, the first commander of United States Army Training and Doctrine Command. Following the Camp David Accords that was signed by Egypt, Israel that was brokered by president Jimmy Carter in 1978, as part of the agreement, both the United States and Egypt agreed that there would be a joint military training led by both countries that would usually take place every 2 years, that exercise is known as Exercise Bright Star.

The 1980s was mostly a decade of reorganization. The Goldwater–Nichols Act of 1986 created unified combatant commands bringing the army together with the other four military services under unified, geographically organized command structures. The army also played a role in the invasions of Grenada in 1983 (Operation Urgent Fury) and Panama in 1989 (Operation Just Cause).

By 1989, Germany was nearing reunification and the Cold War was coming to a close. Army leadership reacted by starting to plan for a reduction in strength. By November 1989 Pentagon briefers were laying out plans to reduce army end strength by 23%, from 750,000 to 580,000. A number of incentives such as early retirement were used.

In 1990, Iraq invaded its smaller neighbor, Kuwait, and U.S. land forces quickly deployed to assure the protection of Saudi Arabia. In January 1991 Operation Desert Storm commenced, a U.S.-led coalition which deployed over 500,000 troops, the bulk of them from U.S. Army formations, to drive out Iraqi forces. The campaign ended in total victory, as Western coalition forces routed the Iraqi Army. Some of the largest tank battles in history were fought during the Gulf war. The Battle of Medina Ridge, Battle of Norfolk and the Battle of 73 Easting were tank battles of historical significance.

After Operation Desert Storm, the army did not see major combat operations for the remainder of the 1990s but did participate in a number of peacekeeping activities. In 1990 the Department of Defense issued guidance for "rebalancing" after a review of the Total Force Policy, but in 2004, USAF Air War College scholars concluded the guidance would reverse the Total Force Policy which is an "essential ingredient to the successful application of military force".

21st century

On 11 September 2001, 53 Army civilians (47 employees and six contractors) and 22 soldiers were among the 125 victims killed in the Pentagon in a terrorist attack when American Airlines Flight 77 commandeered by five Al-Qaeda hijackers slammed into the western side of the building, as part of the September 11 attacks. In response to the 11 September attacks and as part of the global war on terror, U.S. and NATO forces invaded Afghanistan in October 2001, displacing the Taliban government. The U.S. Army was the first into Afghanistan, with the 10th Mountain Division being the first conventional unit to arrive in country in 2001. The U.S. Army also led the combined U.S. and allied invasion of Iraq in 2003; it served as the primary source for ground forces with its ability to sustain short and long-term deployment operations. Like Afghanistan, the U.S. Army was the first into Iraq. In the following years, the mission changed from conflict between regular militaries to counterinsurgency, resulting in the deaths of more than 4,000 U.S. service members (as of March 2008) and injuries to thousands more. 23,813 insurgents were killed in Iraq between 2003 and 2011.

Until 2009, the Army's chief modernization plan, its most ambitious since World War II, was the Future Combat Systems program. In 2009, many systems were canceled, and the remaining were swept into the BCT Modernization program. By 2017, the Brigade Modernization project was completed and its headquarters, the Brigade Modernization Command, was renamed the Joint Modernization Command, or JMC. In response to Budget sequestration in 2013, Army plans were to shrink to 1940 levels, although actual Active-Army end-strengths were projected to fall to some 450,000 troops by the end of FY2017.

From 2016 to 2017, the Army retired hundreds of OH-58 Kiowa Warrior observation helicopters, while retaining its Apache gunships. The 2015 expenditure for Army research, development and acquisition changed from $32 billion projected in 2012 for FY15 to $21 billion for FY15 expected in 2014.

In the 2026 Iran war, the Army participated via offensive missile launches, air defense operations, and possibly combat search and rescue. Army forces launched both ATACMS and Precision Strike Missile tactical ballistic missile against Iran, marking the latter's first combat use. Air defense operations included response to Iran's strikes on Israel and strikes on Arab countries. The Army was also speculated to assist the 3 to 5 April pilot rescue operation in Iran, via the 160th Special Operations Aviation Regiment (Airborne).

Army Components

The task of organizing the U.S. Army commenced in 1775. In the first one hundred years of its existence, the United States Army was maintained as a small peacetime force to man permanent forts and perform other non-wartime duties such as engineering and construction works. During times of war, the U.S. Army was augmented by the much larger United States Volunteers which were raised independently by various state governments. States also maintained full-time militias which could also be called into the service of the army.

By the twentieth century, the U.S. Army had mobilized the U.S. Volunteers on four occasions during each of the major wars of the nineteenth century. During World War I, the "National Army" was organized to fight the conflict, replacing the concept of U.S. Volunteers. It was demobilized at the end of World War I and was replaced by the Regular Army, the Organized Reserve Corps, and the state militias. In the 1920s and 1930s, the "career" soldiers were known as the "Regular Army" with the "Enlisted Reserve Corps" and "Officer Reserve Corps" augmented to fill vacancies when needed.

In 1941, the "Army of the United States" was founded to fight World War II. The Regular Army, Army of the United States, the National Guard, and Officer/Enlisted Reserve Corps (ORC and ERC) existed simultaneously. After World War II, the ORC and ERC were combined into the United States Army Reserve. The Army of the United States was re-established for the Korean War and Vietnam War and was demobilized upon the suspension of the draft.

Currently, the Army is divided into the Regular Army, the Army Reserve, and the Army National Guard. Some states further maintain state defense forces, as a type of reserve to the National Guard, while all states maintain regulations for state militias.

The U.S. Army is also divided into several branches and functional areas. Branches include officers, warrant officers, and enlisted Soldiers while functional areas consist of officers who are reclassified from their former branch into a functional area. However, officers continue to wear the branch insignia of their former branch in most cases, as functional areas do not generally have discrete insignia. Some branches, such as Special Forces, operate similarly to functional areas in that individuals may not join their ranks until having served in another Army branch. Careers in the Army can extend into cross-functional areas for officers, warrant officers, enlisted, and civilian personnel.

Before 1933, the Army National Guard members were considered state militia until they were mobilized into the U.S. Army, typically at the onset of war. Since the 1933 amendment to the National Defense Act of 1916, all Army National Guard soldiers have held dual status. They serve as National Guardsmen under the authority of the governor of their state or territory and as reserve members of the U.S. Army under the authority of the president, in the Army National Guard of the United States.

Since the adoption of the total force policy, in the aftermath of the Vietnam War, reserve component soldiers have taken a more active role in U.S. military operations. For example, Reserve and Guard units took part in the Gulf War, peacekeeping in Kosovo, Afghanistan, and the 2003 invasion of Iraq.

Structure

See Structure of the United States Army for a detailed treatment of the history, components, administrative and operational structure and the branches and functional areas of the Army.

The U.S. Army is made up of three components: the active component, the Regular Army; and two reserve components, the Army National Guard and the Army Reserve. Both reserve components are primarily composed of part-time soldiers who train once a month – known as battle assemblies or unit training assemblies (UTAs) – and conduct two to three weeks of annual training each year. Both the Regular Army and the Army Reserve are organized under Title 10 of the United States Code, while the National Guard is organized under Title 32. While the Army National Guard is organized, trained, and equipped as a component of the U.S. Army, when it is not in federal service it is under the command of individual state and territorial governors. However, the District of Columbia National Guard reports to the U.S. president, not the district's mayor, even when not federalized. Any or all of the National Guard can be federalized by presidential order and against the governor's wishes.

The U.S. Army is led by a civilian secretary of the Army, who has the statutory authority to conduct all the affairs of the army under the authority, direction, and control of the secretary of defense. The chief of staff of the Army, who is the highest-ranked military officer in the army, serves as the principal military adviser and executive agent for the secretary of the Army, i.e., its service chief; and as a member of the Joint Chiefs of Staff, a body composed of the service chiefs from each of the four military services belonging to the Department of Defense who advise the president of the United States, the secretary of defense and the National Security Council on operational military matters, under the guidance of the chairman and vice chairman of the Joint Chiefs of Staff. In 1986, the Goldwater–Nichols Act mandated that operational control of the services follows a chain of command from the president to the secretary of defense directly to the unified combatant commanders, who have control of all units in their geographic or functional area of responsibility, thus the secretaries of the military departments (and their respective service chiefs underneath them) only have the responsibility to organize, train and equip their service components. The army provides trained forces to the combatant commanders for use as directed by the secretary of defense.

In 2013, the army shifted to six geographical commands that align with the six geographical unified combatant commands (CCMD):

United States Army Central headquartered at Shaw Air Force Base, South Carolina

United States Army North headquartered at Fort Sam Houston, Texas

United States Army South headquartered at Fort Sam Houston, Texas

United States Army Europe and Africa headquartered at Clay Kaserne, Wiesbaden, Germany

United States Army Pacific headquartered at Fort Shafter, Hawaii

The army also transformed its base unit from divisions to brigades. Division lineage will be retained, but the divisional headquarters will be able to command any brigade, not just brigades that carry their divisional lineage. The central part of this plan is that each brigade will be modular, i.e., all brigades of the same type will be exactly the same and thus any brigade can be commanded by any division. As specified before the 2013 end-strength re-definitions, the three major types of brigade combat teams are:

Armored brigades, with a strength of 4,743 troops as of 2014.

Stryker brigades, with a strength of 4,500 troops as of 2014.

Infantry brigades, with a strength of 4,413 troops as of 2014.

In addition, there are combat support and service support modular brigades. Combat support brigades include aviation (CAB) brigades, which will come in heavy and light varieties, fires (artillery) brigades (now transforms to division artillery) and expeditionary military intelligence brigades. Combat service support brigades include sustainment brigades and come in several varieties and serve the standard support role in an army.

Combat maneuver organizations

To track the effects of the 2018 budget cuts, see Transformation of the United States Army#Divisions and brigades

The U.S. Army's conventional combat capability currently consists of 12 active divisions as well as several independent maneuver units. The 2nd Infantry Division, based in South Korea, is the only active duty division that does not have permanently assigned brigade combat teams (BCTs). The 2nd Infantry Division relies on rotational Stryker BCTs from other divisions based stateside to fulfill the necessary combat-arms role.

From 2013 through 2017, the Army sustained organizational and end-strength reductions after several years of growth. In June 2013, the Army announced plans to downsize to 32 active brigade combat teams by 2015 to match a reduction in active-duty strength to 490,000 soldiers. Army Chief of Staff Raymond Odierno projected that the Army was to shrink to "450,000 in the active component, 335,000 in the National Guard and 195,000 in U.S. Army Reserve" by 2018. However, this plan was scrapped by the incoming Trump administration, with subsequent plans to expand the Army by 16,000 soldiers to a total of 476,000 by October 2017. The National Guard and the Army Reserve will see a smaller expansion.

The Army's maneuver organization was most recently altered by the reorganization of United States Army Alaska into the 11th Airborne Division, transferring the 1st and 4th Brigade Combat Teams of the 25th Infantry Division under a separate operational headquarters to reflect the brigades' distinct, Arctic-oriented mission. As part of the reorganization, the 1–11 (formerly 1–25) Stryker Brigade Combat Team will reorganize as an Infantry Brigade Combat Team. Following this transition, the active component BCTs will number 11 Armored brigades, 6 Stryker brigades, and 14 Infantry brigades.

Within the Army National Guard and United States Army Reserve, there are a further eight divisions, 27 brigade combat teams, additional combat support and combat service support brigades, and independent cavalry, infantry, artillery, aviation, engineer, and support battalions. The Army Reserve in particular provides virtually all psychological operations and civil affairs units.

United States Army Europe and Africa (USAREUR-AF)

United States Army Western Hemisphere Command (USAWHC)

United States Army Pacific (USARPAC)

For a description of U.S. Army tactical organizational structure, see: a U.S. context and also a global context.

Training

Training in the U.S. Army is generally divided into two categories – individual and collective. Because of COVID-19 precautions, the first two weeks of basic training — not including processing and out-processing – incorporate social distancing and indoor desk-oriented training. Once the recruits have tested negative for COVID-19 for two weeks, the remaining 8 weeks follow the traditional activities for most recruits, followed by Advanced Individualized Training (AIT) where they receive training for their military occupational specialties (MOS). Some individual's MOSs range anywhere from 14 to 20 weeks of One Station Unit Training (OSUT), which combines Basic Training and AIT. The length of AIT school varies by the MOS. The length of time spent in AIT depends on the soldier's MOS. Certain highly technical MOS training requires many months (e.g., foreign language translators). Depending on the army's needs, Basic Combat Training for combat arms soldiers is conducted at several locations. Still, two of the longest-running are the Armor School and the Infantry School, both at Fort Benning, Georgia. Sergeant Major of the Army Dailey notes that an infantrymen's pilot program for One Station Unit Training (OSUT) extends 8 weeks beyond Basic Training and AIT, to 22 weeks. The pilot, designed to boost infantry readiness ended in December 2018. The new Infantry OSUT covered the M240 machine gun as well as the M249 squad automatic weapon. The redesigned Infantry OSUT started in 2019. Depending on the result of the 2018 pilot, OSUTs could also extend training in other combat arms beyond the infantry. One Station Unit Training will be extended to 22 weeks for Armor by Fiscal Year 2021. Additional OSUTs are expanding to Cavalry, Engineer, and Military Police (MP) in the succeeding Fiscal Years.

A new training assignment for junior officers was instituted, that they serve as platoon leaders for Basic Combat Training (BCT) platoons. These lieutenants will assume many of the administrative, logistical, and day-to-day tasks formerly performed by the drill sergeants of those platoons and are expected to "lead, train, and assist with maintaining and enhancing the morale, welfare and readiness" of the drill sergeants and their BCT platoons. These lieutenants are also expected to stem any inappropriate behaviors they witness in their platoons, to free up the drill sergeants for training.

The United States Army Combat Fitness Test (ACFT) was introduced in 2018 to 60 battalions spread throughout the Army. The test and scoring system is the same for all soldiers, regardless of gender. It takes an hour to complete, including rest periods. The ACFT supersedes the Army Physical Fitness Test (APFT), as being more relevant to survival in combat. Six events were determined to better predict which muscle groups of the body were adequately conditioned for combat actions: three deadlifts, a standing power throw of a ten-pound medicine ball, hand-release pushups (which replace the traditional pushup), a sprint/drag/carry 250 yard event, three pull-ups with leg tucks (or a plank test in lieu of the leg tuck), a mandatory rest period, and a two-mile run. As of 1 October 2020 all soldiers from all three components (Regular Army, Reserve, and National Guard) are subject to this test. The ACFT now tests all soldiers in basic training as of October 2020. The ACFT became the official test of record on 1 October 2020; before that day, every Army unit was required to complete a diagnostic ACFT< (All Soldiers with valid APFT scores can use them until March 2022. The Holistic Health and Fitness (H2F) System is one way that soldiers can prepare.). The ACFT movements directly translate to movements on the battlefield. Following their basic and advanced training at the individual level, soldiers may choose to continue their training and apply for an "additional skill identifier" (ASI). The ASI allows the army to take a wide-ranging MOS and focus it on a more specific MOS. For example, a combat medic, whose duties are to provide pre-hospital emergency treatment, may receive ASI training to become a cardiovascular specialist, a dialysis specialist, or even a licensed practical nurse. For commissioned officers, training includes pre-commissioning training, known as Basic Officer Leader Course A, either at USMA or via ROTC, or by completing OCS. After commissioning, officers undergo branch-specific training at the Basic Officer Leaders Course B, (formerly called Officer Basic Course), which varies in time and location according to their future assignments. Officers will continue to attend standardized training at different stages of their careers.

Collective training at the unit level takes place at the unit's assigned station, but the most intensive training at higher echelons is conducted at the three combat training centers (CTC); the National Training Center (NTC) at Fort Irwin, California, the Joint Readiness Training Center (JRTC) at Fort Johnson, Louisiana and the Joint Multinational Training Center (JMRC) at the Hohenfels Training Area in Hohenfels and Grafenwöhr, Germany. ReARMM is the Army Force Generation process approved in 2020 to meet the need to continuously replenish forces for deployment at the unit level and for other echelons as required by the mission. Individual-level replenishment still requires training at a unit level, which is conducted at the continental U.S. (CONUS) replacement center (CRC) at Fort Bliss, in New Mexico and Texas before their individual deployment.

The United States Army has faced recruiting challenges since the COVID-19 pandemic. The Army has implemented the Future Soldier Prep Course (FSPC) to address these issues. This program is designed to assist potential recruits who may initially need to meet the Army's physical fitness or academic standards.

In the fiscal year ending 30 September 2023, approximately 13,000 of the 55,000 recruits, or 24%, participated in the FSPC. This indicates a significant reliance on the program to fill recruitment quotas.

The FSPC offers both physical fitness and academic training. However, most participants enroll in the academic component, which focuses on subjects like basic math, English, and other essential skills.

Weapons

The United States Army employs various weapons to provide light firepower at short ranges. The most common weapon type used by the army is the M4 carbine, a compact variant of the M16 rifle, which is being replaced gradually by the M7 rifle among close combat units. The primary sidearm in the U.S. Army is the M17 pistol through the Modular Handgun System program. Soldiers are also equipped with various hand grenades, such as the M67 fragmentation grenade and M18 smoke grenade.

Many units are supplemented with a variety of specialized weapons, including the M249 SAW (Squad Automatic Weapon), to provide suppressive fire at the squad level. Some units, such as the 10th Mountain Division, have replaced their M249s with Mk 48s. Indirect fire is provided by the M320 grenade launcher. The M1014 Joint Service Combat Shotgun or the Mossberg 590 Shotgun are used for door breaching and close-quarters combat. The M14EBR is used by designated marksmen. Snipers use the M107 Long Range Sniper Rifle, the M2010 Enhanced Sniper Rifle and the M110 Semi-Automatic Sniper Rifle.

The army employs various crew-served weapons to provide heavy firepower at ranges exceeding that of individual weapons.

The M240 is the U.S. Army's standard Medium Machine Gun. The M2 heavy machine gun is generally used as a vehicle-mounted machine gun. In the same way, the 40 mm MK 19 grenade machine gun is mainly used by motorized units.

The U.S. Army uses three types of mortar for indirect fire support when heavier artillery may not be appropriate or available. The smallest of these is the 60 mm M224, normally assigned at the infantry company level. At the next higher echelon, infantry battalions are typically supported by a section of 81 mm M252 mortars. The largest mortar in the army's inventory is the 120 mm M120/M121, which is usually employed by mechanized units.

Fire support for light infantry units is provided by towed howitzers, including the 105 mm M119A1 and the 155 mm M777.

The U.S. Army utilizes a variety of direct-fire rockets and missiles to provide infantry with an Anti-Armor Capability. The AT4 is an unguided projectile that can destroy armor and bunkers at ranges up to 500 meters. The FIM-92 Stinger is a shoulder-launched, heat seeking anti-aircraft missile. The FGM-148 Javelin and BGM-71 TOW are anti-tank guided missiles.

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United States Army

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