The United States fought alongside the South Vietnamese from 1965 to 1973 in the Cold War's biggest proxy conflict.
Over 50,000 Americans died in the Vietnam war and from the draft to popular anti-imperialist sentiments, its impact is still felt today.
Here are 22 more photos of what life looked like during the Vietnam War.
1
A 6ft 5in Machine Gunner With the US 9th Infantry Division
Submerged except for his rifle as he crosses a muddy stream in the Mekong delta south of Saigon on 10 September 1968.
2
US Army Soldiers
In Vietnam, 1970s.
3
BBC Reporters
On the ground in Vietnam.
4
Draft Protestors
A man burns his draft card, March 1970.
5
Chilling Out
Young soldiers decompress.
6
Pentagon Protestors
Offering a flower, 1967.
7
Having some Drinks
Soldiers at base.
8
A Protestor is Apprehended
Washington, D.C., 1967.
9
A Soldier at Work
Taking down barbed wire. 1969.
10
Watching a Protest
Cops in San Francisco.
11
Beer Run in a Huey Gunship
Vietnam War, late 1960s.
12
Protestors
Wichita, Kansas, 1967.
13
Hanging Out
Soldiers and a Jeep.
14
Kent State Massacre
The National Guard at Kent State. 1970.
15
American Soldier
Holding up a jungle centipede during the Vietnam War. 1967.
16
Harlem Residents
Protesting the war.
17
Mark Satin
Sitting in on a call with American draft resisters, 1967.
18
Group Photo
Young soldiers take a break.
19
Anti-Vietnam War Protest
A poster in 1969.
20
"Hard-Hats"
Demonstrating in favour of the Vietnam War, New York, 1970.
