See website: Vietnam War
Troop withdrawal started in 1973 and ended in 1975.
The first American military casualties in Vietnam happened in 1959, and troop built-up continued to a peak in late 1968, then declined until full withdrawal of all U.S. military in April, 1973. The North Vietnamese forces captured the South Vietnamese capital two years later.
On March 16, 1965, the United States launched Operation Rolling Thunder, a sustained bombing campaign against North Vietnam. This operation aimed to weaken the North Vietnamese government's resolve and diminish its ability to support the Viet Cong in South Vietnam. It marked a significant escalation in U.S. military involvement in the Vietnam War, leading to increased troop deployments and widespread anti-war protests in the following years.
The first use of hot air balloons was in the American Civil War for surveillance of troop movements.
The peak US troop strength in Vietnam, of 543,482, was achieved on April 30, 1969.
"A" Troop was the only Troop from the 12th Cavalry sent to Vietnam.
LBJ
69,000
Timely troop movements, troop support, supplies, and strategic air stikes.
During the mid-1960's troop strength became an issue of disagreement between the US Department of Defense and the joint Chiefs of Staff. The dispute revolved around the requests from the military to add more troops into the war. Each side differed on whether US troop strength had an effect on the number of enemy casualties. Defense Secretary McNamara denied reports from the Joint Chiefs of Staff that enemy casualties increased when requests for more troops were sent to Vietnam.
South Vietnam was overrun by communist forces.
See website: Vietnam War
Slow and Honorable
During the Vietnam War and prior (and possibly today, however the current US military is changing so much (almost a law enforcement force), the term "troop" meant either a single soldier and a company of soldiers (men). Examples: a soldier in Vietnam was sometimes called (referred to), "...hey trooper, where ya headed?" Or "Hey troop where's your hat?" However, it was officially (in Vietnam) also the term used for US Armored Cavalry companys; such as, "A Troop, 3rd Sqd 5th Cav", or "B Troop, 3/5 Cav", or "C Troop, 3rd Squadron, 5th Cavalry." (In Vietnam-things might be different today) the US Artillery companies were called "Batterys". Example: "A Battery, 5rd Battalion, 4th Artillery." Everyone else was a "Company."
they had the runs and were out of toilet paper
One event that caused an escalation of troop involvement in Vietnam was the incident in 1964 at the Gulf of Tonkin.