Retired Army Lt. Gen. John Cogswell Oakes, 75, a former commanding general of the 7th Army in Germany and a veteran of World War II and the Korean conflict, died of congestive heart failure Aug. 30 at Walter Reed Army Medical Center. He lived in Washington.

Gen. Oakes was a native of Galveston, Tex., and moved to Washington in 1963. He was a 1928 graduate of the U.S. Military Academy at West Point. Prior to World War II, he served in Panama and was an instructor at the Field Artillery School at Fort Sill, Okla.

He served in Europe during World War II. After the war, he was in Greece with a U.S. military advisory mission during the civil war there and was secretary to the Army General Staff at the Pentagon.

During the Korean war, Gen. Oakes commanded the 25th Infantry Division and later was chief of staff of the Eighth Army in Korea. He was commanding general of the Seventh Army in Germany when he retired in 1963 due to illness.

His decorations include two Legions of Merit, the Bronze Star, the Distinguished Service Medal and decorations from Belgium, Greece and Korea.

Gen. Oakes was a past president of the Army Distaff Foundation and a member of the Army & Navy and Chevy Chase clubs.

Survivors include his wife, Margaret McKinley Oakes of Washington; two sons, Army Col. John Hawley Oakes of West Point, N.Y., and James McKinley Oakes of Washington; two daughters, Sue Oakes Keith of McLean and Margaret Oakes Cox of Oklahoma City, Okla.; a brother, Calvin Hawley Oakes of Washington, and seven grandchildren.