On what occasion did the “Flying Tigers” first serve?

The "Flying Tigers," officially known as the 1st American Volunteer Group (AVG), first served during World War II in the China-Burma-India Theater. This group was composed of pilots who volunteered to fight for the Chinese Nationalist forces against Japan before the United States entered the war. They were renowned for their unique P-40 Warhawk aircraft, which featured distinctive shark teeth nose art and their effective guerrilla tactics against enemy aircraft. Their contributions significantly aided the Chinese forces during a critical time in the conflict. The "Flying Tigers" became an iconic symbol of American resistance and bravery, showcasing the strong bonds of cooperation between the United States and China during the war.