ground-pounder
n.— «I went to the school of infantry, also known as S.O.I. They say that S.O.I. graduates (grunts or ground-pounders) have one of the youngest mortality rates of any school in history because thousands of alumni have gone on to die in armed conflict before the age of 25. » —“A Few Bad Men” by Gabe Hudson New York Times Nov. 19, 2006. (source: Double-Tongued Dictionary)
Further reading
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