GI's in Vietnam were as young as 16; age 19 could have been possible for a 2nd Lieutenant; age 20 to 21 was probably more common, if to be the youngest. College degrees were NOT required for US Army officers during the Vietnam War. They were required for the USN, USMC, and USAF. USA officers were drafted, then tested for their GT scores, 110 or above qualified them for Army OCS (Officer Candidate School; graduates from these schools in WW2 were nick-named "90 Day Wonders").
No.
Vietnam and Cambodia
Great Britain did not send troops to Vietnam during the war.
the Vietnam War 58,000 troops killed and 300,000 injured.over 1.1 million Vietnamese died.
Much of the training to prepare troops for the conditions of the Vietnam jungles was done there.
Controversy exists (to no ones surprise) whether the youngest US serviceman killed in Vietnam was 15 or 16 years of age.
See website: Statistics about the Vietnam War
No.
Since the youngest age for legal enlistment was 17 at the time of the Vietnam War, one could postulate that the birth date of the "youngest" Vietnam Veteran could have been January 1st, 17 years previous to the last date on which US troops were in Vietnam. That day would have been the day the US Embassy was evacuated after Saigon fell to the North Vietnamese Army. However, there have always been men who enlisted by falsification of their age. This was more common in World War Two, but there are cases during Vietnam where a soldier managed to get through Basic Training and Advanced Individual training before being discovered. Also, the Mayaguez Incident is considered part of the Vietnam War, so you should also consider the US Marines and US Air Force personnel who served in that short conflict.
Vietnam and Cambodia
The US asked them to.
Great Britain did not send troops to Vietnam during the war.
The US Civil War (1861-1865) & the Vietnam War (1961-1975).
Nixon said that he would pull troops out of Vietnam. Under a plan called "peace with honor", Nixon planned to negotiate an end to the war.
He brought in more troops in Vietnam and many people knew that was no use
Thailand sent troops to South Vietnam.
He was only in the Korean War. He did entertain the troops in the Vietnam War.