New U.S. Super-Bomber That Blasted Targets In Japan One of the first pictures of the new U.S. B-29 Superfortress shows the giant four-motored bomber next to a small target plane on an airfield in the United States, On June 15. 1944, the U.S. War Department announced that B-29's, described as being able to carry a greater bomb load faster, farther and higher than any other Allied planes, blasted the Japanese home islands from distant bases in the China-Burma-India war theater. The Superfortresses operate under a new American aerial organization, the 20th U.S. Air Force, in the nature of an aerial battle fleet able to strike wherever the need is greatest. June 30, 1944. (Photo by U.S. Office of War Information).