Written just after the war, this account reviews the activities of U.S. Army's Ordnance Department's research and development of small arms, ammunition, artillery, bombs, armored and unarmored combat and motor transport vehicles, aircraft armament, rockets and launchers, fuels and lubricants, rubber, steel, and ballistics, from 1940 through the end of the war, plus effect of climate and terrain in jungle, cave, desert, and arctic warfare on development trends. 134 photos and illustrations. A Merriam Press Reprint.