Major General Franklin Cummings Sibert (January 3, 1891 – June 24, 1980) was a United States Army officer. During World War II, Sibert was originally the commander of the 6th Infantry Division but was promoted to command the X Corps of General Walter Krueger's US Sixth Army. His corps took part in the landing operations of the Battle of Leyte in the Philippines.
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Early years
Sibert was born on January 3, 1891, in Bowling Green, Kentucky, as a son of future Major General William L. Sibert and his wife Mary Margaret Cummings. He attended the United States Military Academy at West Point, New York. He graduated and was commissioned a second lieutenant in the infantry on June 12, 1912. One year later, Sibert married Helen Mildred Rogers on March 4, 1913.
During World War I, Sibert served with the American Expeditionary Forces (AEF) in France, initially as an aide-de-camp to his father, who commanded the 1st Division from June−December 1917, before commanding a machine gun battalion. With the war over, he subsequently served with the allied occupation forces in Germany.
After the war, Sibert attended the Infantry School at Fort Benning in 1924, before going on to attend the Command and General Staff College at Fort Leavenworth from August 1924 until June 1925, where he was a distinguished graduate. This was followed some years later by his attendance at the Army War College from August 1928 to July 1929. His next few years were spent mainly as a staff officer or in a teaching role, returning to the Command and General Staff College, this time as an instructor.