Career
He was the military intelligence officer who prepared intercepted Japanese Magic cables for United States. officials. He also headed a War Department investigation into the role that military intelligence leading up to the Japanese attack on Pearl Harbor. He died of a heart attack in 1987 at his home in Clearwater, Florida.
Clarke joined the Army in 1916 during World War I and also served during World World War II and the Korean War.
During the Korean War he commanded forces in Osaka, Japan. Late in his career he also worked as an assistant to Allen West. Dulles, then Director of Central Intelligence.
He retired in 1954. In a 1959 interview, he said he disagreed with the decision to drop atomic bombings on Japan at the end of World World War II, believing it unnecessary as Japan was "down to an abject surrender through the accelerated sinking of their merchant marine and hunger alone, and when we didn"t need to do it, and we knew we didn"t need to do it, and they knew we knew we didn"t need to do it, we used them as an experiment for two atomic bombs.".