It was a global war foughton an industrial scale unlike anything before or since. Conservatively, it consumed at least 55 million lives while overturning the way humans regarded their nations, their worlds, and themselves. It also spurred the greatest technological revolution of all time: in five years, going from 250mph biplane fighters in some nations to 550mph jets and ocean-spanning bombers that delivered atomic weapons. Supporting the vast American effort were huge training establishments for the U.S. Army Air Force (AAF) and the U.S. Navy (USN). This is their story.