After a long and brutal war, Vietnamese revolutionaries led by Ho Chi Minh end nearly a century of French colonial occupation. With the Cold War intensifying, Vietnam is divided in two. Communists in the North aim to reunify the country, while America supports Ngo Dinh Diem’s untested regime in the South.

President Kennedy inspires idealistic young Americans to serve their country and wrestles with how deeply to get involved in South Vietnam. As the increasingly autocratic Diem regime faces a growing communist insurgency and widespread Buddhist protests, a grave political crisis unfolds.

Defying American airpower, North Vietnamese troops and materiel stream down the Ho Chi Minh Trail into the South while Saigon struggles to “pacify” the countryside. As an antiwar movement builds back home, hundreds of thousands of soldiers and Marines discover that the war they are being asked to fight in Vietnam is nothing like their fathers’ war.

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.