Just starting reading "Wing to Wing: Air Combat in China, 1943-45". It's the story of the Chinese-American Composite Wing. Technically a Chinese Air Force unit, it was established to train Chinese air and ground crews up to the level modern air combat. The unit was organized so that the Chinese and American components mirrored each other (Chinese CO-American CO, American pilot-Chinese co-pilot and so on among the air and ground crews). The unit flew P-40s, P-51s and B-25s. The CACW produced 5 American aces and 3 Chinese aces.