U.S. Marine Corps Dictionary


An inexact distance derived from artillery sightings in which each click of site elevation would move the impact point depending on a number of diverse options. Roughly either a mile or a kilometer. Used mostly since Vietnam. (background) Legend has it that when the GP (jeep) vehicle was first introduced the odometer would click every one fifth of a mile and that soldiers soon learned to judge distance by the click so that they could pay attention to road hazards and enemy positions.

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DevilDogCorps.com is an unofficial online dictionary of terms and acronyms commonly used within the United States Marine Corps.