Walter Krueger was born in Flatow, West Prussia, on 20th January 1881. His family emigrated to the United States in 1888 and he grew up in Madison, Indiana.
At the age of seventeen Krueger joined the United States Army and served in the Spanish-American War. He was an impressive soldier and soon reached the rank of sergeant major.
After the war Krueger taught at the Army War College and served with the War Plans Division in Washington. Promoted to the rank of major general he was given command of the 2nd Division based in Texas. In October 1940 he became head of the 3rd Army Headquarters.
In January 1943 Krueger and the 3rd Army were sent to Australia. It was not until October 1944 that Krueger first saw action when he took part in the Leyte campaign. General Douglas MacArthur was critical of Krueger for advancing too slowly and considered having him replaced. Later he was involved in the capture of Luzon and in March 1945 was promoted to full general.
After the war Krueger retired to San Antonio. Walter Krueger, who wrote no memoirs, died in 1967.