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The Vietnam War ended on April 30, 1975 (23 images)

United States combat troops started arriving in Vietnam in 1965. We had military advisors in the country before that time. The Vietnam war ended on April 30, 1975, with the fall of Saigon. Many of the photographs that came out of that war are still etched in our minds.

In this June 11, 1963 file photo, Quang Duc, a Buddhist monk, burns himself to death on a Saigon street to protest alleged persecution of Buddhists by the South Vietnamese government. (AP Photo/Malcolm Browne)

In this Jan. 9, 1964 file photo, a South Vietnamese soldier uses the end of a dagger to beat a farmer for allegedly supplying government troops with inaccurate information about the movement of Viet Cong guerrillas in a village west of Saigon, Vietnam. (AP Photo/Horst Faas)

In this March 19, 1964 file photo, a father holds the body of his child as South Vietnamese Army Rangers look down from their armored vehicle near the Cambodian border in Vietnam. (AP Photo/Horst Faas)

In this March 1965 file photo, hovering U.S. Army helicopters pour machine gun fire into a tree line to cover the advance of South Vietnamese ground troops in an attack on a Viet Cong camp 18 miles north of Tay Ninh, northwest of Saigon near the Cambodian border, in Vietnam. (AP Photo/Horst Faas)

In this Sept. 25, 1965 file photo, paratroopers of the U.S. 2nd Battalion, 173rd Airborne Brigade hold their automatic weapons above water as they cross a river in the rain during a search for Viet Cong positions in the jungle area of Ben Cat, South Vietnam. (AP Photo/Henri Huet)

In this June 18, 1965 file photo, an unidentified U.S. Army soldier wears a hand lettered "War Is Hell" slogan on his helmet, in Vietnam. (AP Photo/Horst Faas)

In this Jan. 1, 1966 file photo, women and children crouch in a muddy canal as they take cover from intense Viet Cong fire at Bao Trai, about 20 miles west of Saigon, Vietnam. (AP Photo/Horst Faas)

In this January 1966 file photo, First Cavalry Division medic Thomas Cole, from Richmond, Va., looks up with one uncovered eye as he treats a wounded Staff Sgt. Harrison Pell during a firefight in the Central Highlands in Vietnam, between U.S. troops and a combined North Vietnamese and Vietcong force. (AP Photo/Henri Huet)

In this Sept. 21, 1966 file photo, U.S. Marines emerge from their muddy foxholes at sunrise after a third night of fighting against continued attacks of north Vietnamese 324 B division troops during the Vietnam War. (AP Photo/Henri Huet)

In this April 1969 file photo, a South Vietnamese woman mourns over the body of her husband, found with 47 others in a mass grave near Hue, Vietnam. (AP Photo/Horst Faas)

In this June 15, 1967 file photo, American infantrymen crowd into a mud-filled bomb crater and look up at tall jungle trees seeking out Viet Cong snipers firing at them during a battle in Phuoc Vinh, north-Northeast of Saigon in Vietnam's War Zone D. (AP Photo/Henri Huet)

In this 1966 file photo, the body of an American paratrooper killed in action in the jungle near the Cambodian border is raised up to an evacuation helicopter in War Zone C, Vietnam. (AP Photo/Henri Huet)

In this 1966 file photo, Pfc. Lacey Skinner of Birmingham, Ala., crawls through the mud of a rice paddy avoiding heavy Viet Cong fire near An Thi in South Vietnam, as troops of the U.S. 1st Cavalry Division fight a fierce 24-hour battle along the central coast. (AP Photo/Henri Huet)

In this June 17, 1967 file photo, medic James E. Callahan of Pittsfield, Mass., treats a U.S. infantryman who suffered a head wound when a Viet Cong bullet pierced his helmet during a three-hour battle in war zone D, about 50 miles northeast of Saigon. (AP Photo/Henri Huet)

In this 1966 file photo, U.S. Army helicopters providing support for U.S. ground troops fly into a staging area fifty miles northeast of Saigon, Vietnam. (AP Photo/Henri Huet)

In this June 1967 file photo, medic James E. Callahan of Pittsfield, Mass., looks up while applying mouth-to-mouth resuscitation to a seriously wounded soldier north of Saigon in June 1967. (AP Photo/Henri Huet)

In this Feb. 1, 1968 file photo, South Vietnamese Gen. Nguyen Ngoc Loan, chief of the national police, fires his pistol into the head of suspected Viet Cong officer Nguyen Van Lem, also known as Bay Lop, on a Saigon street, early in the Tet Offensive. (AP Photo/Eddie Adams)

In this June 8, 1972 file photo, 9-year-old Kim Phuc, center, runs down Route 1 near Trang Bang, Vietnam after an aerial napalm attack. (AP Photo/Nick Ut)

In this April 29, 1975 file photo, people try to scale the 14-foot wall of the U.S. Embassy in Saigon, trying to reach evacuation helicopters, as the last of the Americans depart from Vietnam. (AP Photo/Neal Ulevich)

In this April 29, 1975 file photo, U.S. Navy personnel aboard the USS Blue Ridge push a helicopter into the sea off the coast of Vietnam in order to make room for more evacuation flights from Saigon. (AP Photo)

In this April 29, 1975 file photo, a South Vietnamese mother and her three children are shown on the deck of an amphibious command ship being plucked out of Saigon by U.S. Marine helicopters in Vietnam. (AP Photo)

In this April 30, 1975 file photo, a North Vietnamese tank rolls through the gate of the Presidential Palace in Saigon, signifying the fall of South Vietnam. (AP Photo)

In this March 17, 1973 file photo, released prisoner of war Lt. Col. Robert L. Stirm is greeted by his family at Travis Air Force Base in Fairfield, Calif., as he returns home from the Vietnam War. (AP Photo/Sal Veder)