 Despite the 1962 International Agreement on the Neutrality of Laos, the Pathet Lao and North Vietnamese continued to use and improve the supply route which would become known as the Ho Chi Minh Trail .More specifically, during the Second Indochina War the North Vietnamese obtained the cooperation of the Lao People's Revolutionary Party (Pathet Lao) in constructing and maintaining the Ho Chi Minh Trail which passed through the length of Laos.Thousands of Vietnamese troops were stationed in Laos to maintain the road network and provide for its security.