Lieutenant General Phillip B. Davidson was the chief U.S. military intelligence officer in Viet Nam (MACV J-2) from May 1967 to May 1969, and later wrote two books about the Viet Nam conflict. He had also served in World War II, following his graduation from the USMA (West Point) in 1939; and was a member of General MacArthur's G-2 (Intelligence) staff during the Korean War.