Vietnam War Facts:

One of North Vietnam's most important assets during the war was the "Ho Chi Minh Trail," a network of roads leading from North Vietnam into central South Vietnam, along which they transported soldiers, arms, and supplies to the Viet Cong in the South.

American and South Vietnamese forces relied heavily on air power during the war. The B-52 heavy bomber, F4 Phantom, and Bell UH-1 guaranteed American superiority in the air.

The majority of North Vietnamese and Viet Cong armaments were manufactured by China and the Soviet Union.

A controversial tool used during the Vietnam War was "Agent Orange," a defoliant designed to strip away forest cover used by enemy guerrilla troops. After the war, the chemical mixture was found to cause tumors, birth defects, and other maladies, which both returning U.S. soldiers and many Vietnamese suffered from.