When Japanese planes laid waste to Pearl Harbor on the morning of December 7, 1941, the United States had just one air combat unit on the continent of Asia. That was the 1st American Volunteer Group - sponsored by the White House, equipped and paid by a U.S. loan, but officially part of the Chinese Air Force. On December 20, this band of mercenaries won immortality over the city of Kunming as the "Flying Tigers." This is an expanded version, with new photographs, of the cover story for America in WWII magazine. Revised and updated 2022.