US military aviation made an outstanding contribution to the victory of the Allies in the anti-Hitler coalition in World War II. Thousands of American aircraft delivered to the USSR left a good memory of themselves among Soviet aviators who fought on them with a common enemy. The book, prepared on the basis of archival materials, describes almost all US aircraft and their modifications that took part in World War II. The text is complemented by documentary diagrams of the coloring of American aces and detailed volumetric diagrams of the most famous machines.