Host Jack Smith, a rifleman wounded at the Battle of Ia Drang, recalls one of Vietnam's first major battles.

Veterans relive the siege of the U.S. military base at Khe Sahn, the largest single battle of the war.

The 1968 Tet Offensive ushers in the bloodiest year of the war.

Soldiers relive experiences in the cockpit; veterans recall being shot down and locked up as POWs.

Stories and images recount the "chilling" stories of soldiers who participated in clandestine operations of the Vietnam War.

Eyewitnesses recount the war's final days as the North Vietnamese close in on Saigon.