2 jacket is the Flying Tigers  blood chit. These patches were issued to US pilots flying in China  during WWII so they could be returned safely by Chinese people (most  of whom didnt speak English) back to US air bases in China, thus  saving many lives. The flag on the chit is the Nationalist Chinese  flag (now Taiwan). The chit reads: "This man is an American fighting  for China. Please save and protect him as a fellow soldier". Known  as the Flying Tigers, these men were a group of maverick pilots  flying for Chiang