http://www.libcom.org/history/articles/vietnam-gi-resistance/index.php1970 - The rebellion grows
By 1970, the U.S. Army had 65,643 deserters, roughly the equivalent of four infantry divisions. In an article published in the Armed Forces Journal (June 7, 1971), Marine Colonel Robert D. Heinl Jr., a veteran combat commander with over 27 years experience in the Marines, and the author of Soldiers Of The Sea, a definitive history of the Marine Corps, wrote:
“By every conceivable indicator, our army that remains in Vietnam is in a state approaching collapse, with individual units avoiding or having refused combat, murdering their officers and non-commissioned officers, drug-ridden, and dispirited where not near mutinous. Elsewhere than Vietnam, the situation is nearly as serious… Sedition, coupled with disaffection from within the ranks, and externally fomented with an audacity and intensity previously inconceivable, infest the Armed Services...”
Heinl cited a New York Times article which quoted an enlisted man saying, “The American garrisons on the larger bases are virtually disarmed. The lifers have taken our weapons away...there have also been quite a few frag incidents in the battalion.”
“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. Heinl wrote, “Bounties, raised by common subscription in amounts running anywhere from $50 to $1,000, have been widely reported put on the heads of leaders who the privates and SP4s want to rub out.” Shortly after the costly assault on Hamburger Hill in mid-1969, one of the GI underground newspapers in Vietnam, GI Says, publicly offered a $10,000 bounty on Lieutenant Colonel Weldon Hunnicutt, the officer who ordered and led the attack.
“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. War equipment was frequently sabotaged and destroyed.