 Following his involvement there in a program to teach analytical approaches used in business to officers of the United States Army Air Forces, he entered the USAAF as a captain in early 1943, serving most of World War II with its Office of Statistical Control.One of his major responsibilities was the analysis of U.S. bombers' efficiency and effectiveness, especially the B-29 forces commanded by Major General Curtis LeMay in India, China, and the Mariana Islands.McNamara established a statistical control unit for the XX Bomber Command and devised schedules for B-29s doubling as transports for carrying fuel and cargo over The Hump.