William E. DePuy

DePuy retired from active duty in July 1977, and settled in Highfield, Virginia. He died on September 9, 1992, of Creutzfeldt–Jakob disease, and his wife died on March 15, 2002.

DePuy's service as battalion commander, regimental executive officer and division's operations officer was described as outstanding by 90th Division late commander, Major General Herbert L. Earnest. General James A. Van Fleet called DePuy's staff work as "brilliant" and added that his "inspiring and courageous leadership" of his battalion in many actions included the Ardennes, provides "some of the finest examples of infantry operations in this War".

DePuy supervised the Army's effort to learn lessons from the Yom Kippur War, which resulted in TRADOC's first publication, a 1976 revision of the Army's FM 100-5 Operations, which promoted an attrition-based doctrine called "Active Defense."

DePuy is perhaps best remembered for his efforts while he was the first commander of the United States Army Training and Doctrine Command from 1973 to 1977. DePuy outlined his strategic worldview in a June 1973 speech at Fort Polk, Louisiana, in which he claimed that a war in Europe against the Soviet Union would need to be fought quickly and decisively with a qualitatively superior army to negate the Soviets' advantage in manpower. In another speech that year, he emphasized the need for realistic training in highly maneuverable combined arms formations with tanks playing a leading role on the battlefield. DePuy initially developed these views from his World War II experience against a German Army trained in blitzkrieg, though his review of Israeli fighting during the 1973 Yom Kippur War reconfirmed his beliefs.

First deployed to Vietnam in 1964, DePuy served as Chief of Staff of Operations for Military Assistance Command, Vietnam, and in March 1966 he assumed command of the 1st Infantry Division ("the Big Red One"). During his time as commander, he established a scholarship fund for the children of 1st Infantry Division soldiers killed in Vietnam, which eventually became the 1st Infantry Division Foundation. Also during his time as commander, he became known as having an "ax-swinging" style of officer management; having fired as many as 56 officers under him, including seven battalion commanders and many more majors, captains and sergeants major. This led Army chief of staff General Harold K. Johnson to say, "If every division commander relieved people like DePuy, I'd soon be out of lieutenant colonels and majors. He just eats them up like peanuts." DePuy later explained to an interviewer that his experience in World War II had informed him of the importance of good leadership in war as he had "fought in Normandy with three battalion commanders who should have been relieved in peacetime." He firmly believed that command was a privilege to be earned, not a right.

DePuy met Marjory Kennedy Walker of Salem, Virginia, a Far East specialist who served with both the Office of Strategic Services and the Central Intelligence Agency, and they were married in June 1951. A son, William E DePuy Jr. was born in July 1952, and daughters Joslin and Daphne in July 1953 and 1954, respectively.

Following World War II, DePuy attended the United States Army Command and General Staff College. After graduation, he served in myriad command and staff positions, including command of the 2d Battalion, 8th Infantry, 4th Infantry Division, and the 1st Battle Group, 30th Infantry, 3d Infantry Division, both in the Federal Republic of Germany. In 1948 he attended the Defense Language Institute for a year to learn Russian, followed in 1949 by assignment as Assistant Military Attaché, and later the acting Army Attaché in Budapest, Hungary. During the Korean War, DePuy spent time convalescing after a broken leg, and then performed clandestine service for the Central Intelligence Agency in China and other Asian countries. In 1953, DePuy began attendance at the Armed Forces Staff College, followed by assignment to the Office of the Chief of Staff of the United States Army, where he worked on modernization of Army force structure, doctrine and training policies. In 1960, DePuy was a student at the Royal College of Defence Studies.

Shortly after the United States' entry into World War II, DePuy was assigned in 1942 as a lieutenant, at age 22, to the newly formed 90th Infantry Division. He received a field promotion to major in command of a battalion during the Normandy campaign in August 1944, at age 24. He served with the 90th Division in the fierce fighting from Utah Beach through the Battle of the Bulge. For his combat heroism he was awarded his first Distinguished Service Cross and three Silver Stars. He then served as an operations officer at division level and was promoted to lieutenant colonel in January 1945.

DePuy was born in Jamestown, North Dakota. He was of French Huguenot and Scotch-Irish descent via Canada. His military career began when he enlisted in the South Dakota National Guard, eventually becoming a squad leader. He graduated from South Dakota State University in 1941 with a Bachelor of Science in economics, and received a Reserve Officers' Training Corps commission as a second lieutenant of Infantry. His first assignment was with the 20th Infantry Regiment at Fort Leonard Wood, and during this time he walked to the Louisiana Maneuvers and back with his platoon.

William Eugene DePuy (/dɛˈpjuː/ deh-PEW; October 1, 1919 – September 9, 1992) was a United States Army general and the first commander of the United States Army Training and Doctrine Command. He is widely regarded as one of the principal architects of the restructuring of United States Army doctrine after the American withdrawal from Vietnam.