Role of the United States in the Vietnam War in PAVN/NLF casualties after which a decisive (or at least political) victory would be possible. It is widely held that the average U.S. serviceman was nineteen years old, as evidenced by the casual reference in a pop song ("19" by Paul Hardcastle); the figure is cited by Lt. Col. Dave Grossman ret. of the Killology Research Group in his 1995 book "" (p. 265). However, it is disputed by the Vietnam Helicopter Flight Crew Network Website, which claims the average age of MOS 11B personnel was 22. This compares with 26 years of age for those who participated in World
1966 in the Vietnam War soldiers in South Vietnam at nearly 280,000 by June 1966, including part-time guerrillas. A pause in the bombing of North Vietnam by U.S. warplanes had been announced by President Johnson on December 24 and remained in effect. The PAVN bombarded a Special Forces Civilian Irregular Defense Group camp at Khe Sanh Combat Base near the DMZ of South Vietnam with 120mm mortars, the heaviest weapon they had used in the War. Defending the combat base were American and South Vietnamese Special Forces, Nung and Bru (Montagnard) irregulars, and Ruff-Puff militia. Operation Crimp (also known as the Battle of the Ho