What War would you guess more U.S. military died than any other? If you said The War Between the States, you would be correct.
Here are the statistics: 1,330,057 died in 10 Major Wars through the Gulf War. Subtracting the 650,00 est.(49%), who died in the WBTS, that leaves 680,057 in all other wars.
It is shocking when you think about it. The next highest number of casualties was WWII with 407,00 dead, but the population of our country at that time was 133 million. Total population during the "Civil War" - 31.5 million.