WWI: 53,402 American battle deaths, plus 63,114 non-theater deaths.
WWII: 291,557 battle deaths. 113,842 non-theater deaths
Korea: 33,741 battle deaths. 2,827 other deaths in theater, 17,730 other non-theater deaths.
Vietnam: 47,410 battle deaths. 10,789 other deaths in theater, 32,000 non-theater deaths.
Gulf War: 147 battle deaths. 382 other deaths in theater, 1,565 non-theater deaths.
Source: http://www.infoplease.com/ipa/A0004615.html
Basically the same numbers I used except there seems to be an inconsistency...the "non-theater" deaths listed for WWI and WWII are "in-theater" but non battle deaths. (Disease mostly.)
And I have no idea where the 30,000 "non-theater" Vietnam deaths would come from.
Not to be crude or anything like that, but the total number of troops dead we suffered in WWI, WWI, Korea, Vietnam and the Gulf War I was 668,506 -- about 1/3rd of the casualties faced by Japan in WWII(1.7 million), about 1/5th of what Germany faced in WWII (3.25 million) and about 1/20th of what the Soviet Union lost in WWII (13.7 million)
It shows we do care a lot about our troops