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
South Korea in the Vietnam War government.The US had also withdrew the 7th Division from the Korean peninsula while placing the 2nd Division in the rear which soured relations between Korea and the US. In 1969 the South Korean army accounted for 9% of the foreign troops stationed in South Vietnam (US Army 475,200, ROK Army 49,755), by the end of 1972, the South Korean army accounted for 60.5% of foreign troops (US Army 24,200, ROK Army 37,438). US Marine Aviation assets that supported the Blue Dragon troops withdrew completely in May 1971 while the combat role of Korean troops continued. Around the time of the