<Tr> <Td> </Td> <Td> American Civil War </Td> <Td> 1861--65 </Td> <Td> 750,000 (both U.S. and Confederate) </Td> <Td> 420 </Td> <Td> 31,443,000 </Td> <Td> 2.385% (1860) </Td> </Tr> <Tr> <Td> </Td> <Td> World War II </Td> <Td> 1941--45 </Td> <Td> 405,399 </Td> <Td> 297 </Td> <Td> 133,402,000 </Td> <Td> 0.307% (1940) </Td> </Tr> <Tr> <Td> </Td> <Td> World War I </Td> <Td> 1917--18 </Td> <Td> 116,516 </Td> <Td> 279 </Td> <Td> 103,268,000 </Td> <Td> 0.110% (1920) </Td> </Tr> <Tr> <Td> </Td> <Td> Vietnam War </Td> <Td> 1961--75 </Td> <Td> 58,209 </Td> <Td> 11 </Td> <Td> 179,323,175 </Td> <Td> 0.032% (1970) </Td> </Tr>

How many american soldiers died in the world war 1