I visited EAA a couple of weeks ago, and got excited about planes; so I'm taking a short break from the Gold topic to discuss one of history's most famous aviation groups.
Everyone is pretty familiar with the shark's mouth paint scheme on fighters; the Flying Tigers were the group that made it famous. How did that happen? In 1941, Japan was at war with China, and was invading and occpying area in mainland Asia. America was against the Japanese expansion, and China appealed to the US for support. The US was not willing to go to war, but Roosevelt authorized payments to a private military contractor named CAMCO and provided one hundred P-40 fighters to them. US military pilots were allowed to resign to receive "training and instruction" from CAMCO.
That "training and instruction" would come in the form of combat with the Japanese. Claire Chennault, an ex-US officer who was serving as an air advisor to the Chinese army, commanded the group, and taught them to use tactics that featured the strengths of the P-40 while minimizing its weaknesses. The P-40 was a heavy fighter with armor for the pilot; Japanese fighters did not have that armor, so they were lighter and more maneuverable. Chennault emphasized diving for attacking and escaping and head-on attacks when possible. The group had an astonishing success rate in individual combat; numbers are difficult to assess accurately, but a recent estimate was 115 enemy planes downed compared to 14 pilots killed (from Wikipedia).
The military campaign fought by the group is interesting; it could be described as an insurgency with very good weaponry (imagine Iraqis in Blackhawk helicopters). The Tigers received significant support from the Chinese, including the "Early Warning Net" that consisted of spotters radioing air activity from all over the countryside. Further, it provided a great boost to morale. When America entered the war at the end of 1941, they had suffered a major military defeat and wouldn't be able to make traction for sometime; but the Flying Tigers had already been organized, were in operation, and pronvided headlines that captured the nation's attention during a tough time. In 1942, the AVG (American Volunteer Group, the official name) was brought into the US Army Air Corps, though many of the pilots refused to join, believing they were disrespected and treated unfairly.
I'm reading an autobiography on the subject called "God is my co-pilot", written during WWII by a pilot named Robert Scott. The book is a historical artifact itself; its racist characterizations of the Japanese are an anachronism in sync with the xenophobia of the time. But the stories are jaw-dropping, from his time flying a WWI-surplus plane as a teenager to his years flying the mail and training pilots in the 1930s to his quest to see action despite his age during the war. It's a pretty quick read, I'd recommend it during the next EAA.