Vietcong - Ho Chi Minh trail
Established to get weapons and equipment to rebels for NV - around 1959
To carry supplies from North - South
Hundreds of interlocking trails, many ran through Laos and Cambodia to avoid US air strikes
By early 1960s, Vietcong controlled substantial parts of South Vietnam
However Diem was becoming increasingly unpopular - in 1963 overthrown and killed by his own troops
US secretly backed this - hoped a new leader would improve the situation