After nearly a century of French colonial rule, Vietnam emerges independent, but divided.

As a communist insurgency gains strength, JFK wrestles with American involvement in South Vietnam.

With South Vietnam in chaos, hardliners in Hanoi seize the initiative and send combat troops to the South, accelerating the insurgency. Fearing Saigon's collapse, President Johnson escalates America's military commitment, authorizing sustained bombing of the North and deploying ground troops in the South.

US soldiers discover Vietnam is unlike their fathers’ war, while the antiwar movement grows.

American casualties and enemy body counts mount as marines face deadly North Vietnamese ambushes and artillery south of the DMZ and army units chase an elusive enemy in the Central Highlands. Hanoi lays plans for a massive surprise offensive, and the Johnson administration reassures the American public that victory is in sight.

Shaken by the Tet Offensive, assassinations and unrest, America seems to be coming apart.