About 27,000 US Troops were taken as POWs during WW-2 and 11,000 died while in captivity. Many died while in transit to the Japanese mainland on the Hellships, some of which were sunk by Allied attack.
Asia-Pacific 108,504:
Army ground forces 41,592
United States Air Forces 15,694
Navy/Coast Guard 31,485
Marine Corps 19,733
Unidentified Theaters- Army 39
248,316 wounded and missing
Before secession the United States had a population of 31 million. The Union had 23 million, and the South had only 9 million. 3.5 of that were slaves (around 150,000 were free blacks) and not...