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(con. 1960s) Grunts: US Infantry in Vietnam 7: One of the first things that a grunt would do would be to discard the ‘butt’ pack [...] in favor of the lightweight rucksack.at buttpack (n.) under butt, n.1
(con. 1960s) Grunts: US Infantry in Vietnam 7: One of the first things that a grunt would do would be to discard the ‘butt’ pack [...] in favor of the lightweight rucksack. (con. 1960s) Grunts: US Infantry in Vietnam 32: Cases of C-rations are delivered by ‘mules’. Mules were small utility vehicles.at mule, n.
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