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Frag incidents” or “fragging” was soldier slang in Vietnam for the killing of strict, unpopular and aggressive officers and NCO’s (Non-Commissioned Officers, or “non-coms”). The word apparently originated from enlisted men using fragmentation grenades to off commanders. […] “The Pentagon has now disclosed that fraggings in 1970 (209 killings) have more than doubled those of the previous year (96 killings). Word of the deaths of officers will bring cheers at troop movies or in bivouacs of certain units.” Congressional hearings on fraggings held in 1973 estimated that roughly 3% of officer and non-com deaths in Vietnam between 1961 and 1972 were a result of fraggings. But these figures were only for killings committed with grenades, and didn’t include officer deaths from automatic weapons fire, handguns and knifings. The Army’s Judge Advocate General’s Corps estimated that only 10% of fragging attempts resulted in anyone going to trial. In the America l Division, plagued by poor morale, fraggings during 1971 were estimated to be running around one a week. 1961-1973: GI resistance in the Vietnam War | libcom.org