The XP-59A is the first American jet aircraft. It did not see combat but it did give the U. S. Army Air Forces (AAF) and the U. S. Navy valuable experience with jet aircraft technology and helped pave the way to more advanced designs. The United States was slow to enter the field of jet propulsion. Political and military leaders wisely chose to forego rushing jet airplanes into service and concentrated instead on mass-producing and fielding more conventional designs that could contribute more quickly to the war effort. Britain's Gloster Meteor fighter served briefly at war's end and the Japanese flew the Nakajima Kikka twice (see NASM collection).
The Germans lead the world in jet-propelled airplanes and the Messerschmitt Me 262 jet fighter and the Arado Ar 234 jet bomber (see NASM collection for these aircraft) both reached operational status. Other types also flew but the technology was so new that it had no measurable effect on the war.