Amerikansk generalløjtnant. Kommanderede II korps i Sicilien og Italien. Chef for 3. armé 4/46>9/1 47.
Født i Fort Bayard, New Mexico, den 30. oktober 1888. Upon graduation from the U.S. Military Academy in 1913, he was commissioned a second lieutenant in the cavalry.
He completed the Command and General Staff School in 1926, and in 1933 he graduated from the Ecole Superieure de Guerre.
From 1933 to 1936 he served as Chief, Department of Tactics, at the Cavalry School and graduated from the Army War College in 1937.
From 1938 to 1939 he served as Executive officer of the 13th Cavalry at Fort Knox, and from 1939 to 1940 he served in the Supply Division of the War Department General Staff as Chief, Supply and Transportation Branch.
In 1940 he became the Chief of Staff of the 2d Armored Division at Fort Benning, and in 1942 became the Commanding General, Combat Command, 3d Armored Division, at Camp Polk.
From June to September 1942 he commanded the 9th Armored Division at Fort Riley before going to North Africa to become the Deputy Commanding General of the I Armored Corps.
From 1943 to 1945 he served as Commanding General, II Corps, in Sicily, Italy, and Austria. In April 1945 he was promoted to Lieutenant General. He commanded the Seventh Army from 1945 to 1946 and the Third Army from 1946 to 1947.
In 1947, General Keyes was appointed American High Commissioner on the Allied Council for Austria.
General Keyes retired in 1954 and died September 17, 1967.