After the Paris Peace Conference in 1989 , the NVA withdrew Escaping from Cambodian territory .

The targets Aiming of these attacks Attack were sanctuaries and Base Areas of the People 's Army of Vietnam ( PAVN — commonly referred to during the Vietnam War Hostile_encounter as the North Vietnamese Army [ NVA ] ) and forces of the Viet Cong ( NLF ) , which utilized Using them for resupply Supply , training Education_teaching , and resting between campaigns Military_operation across the border in the Republic of Vietnam ( South Vietnam ) .

Past this point , the People 's Army of Vietnam ( known also as the NVA ) engaged Participation in more conventional warfare with US and South Vietnamese forces .

By the end of the year , the NLF insurgents held Hold almost no territory in South Vietnam , and their recruitment dropped Motion_directional by over 80 % in 1969 , signifying a drastic reduction in guerrilla operations and necessitating increased Cause_change_of_position_on_a_scale use of NVA regulars from the north .