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For the US, just estimating, roughly 2 million or more men served in the US Civil War, and 720,000 served in WWI about 16 million men served during WWII,

5162060 Army and Marine combined served in the Vietnam War (counting all of SEA-Southeast Asia), and probably one more million men for the Revolutionary, War of 1812, Mexican War of 1846, Spanish-American War of 1898, plus another million for Korea...about 25 or 30 million men.

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14y ago

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