Men who are members of the armed forces or military; soldiers.
From 'service' (military duty) + 'men' (plural of man). The term became common during World War I and II when large numbers of men were enlisted in military service.
The word 'servicemen' carries a specific historical weight—it's rarely used for women soldiers, which shows how language can freeze moments in time when it was created. Modern military language is shifting to gender-neutral terms like 'service members' instead.
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