In contrast to the situation faced by their opponents in Saigon, the North Vietnamese government were buoyed by the victories achieved by their armies since December 1974. By 8 April 1975, the PAVN had captured all of South Vietnam's I and II Corps, as well as Phước Long Province. While the South Vietnamese forces were disintegrating all over the country, North Vietnam had two army corps moving towards the last South Vietnamese stronghold at Xuân Lộc. The PAVN 4th Army Corps, which overran Phước Long several months earlier, approached Xuân Lộc from the north-east after they captured Tây Ninh, Bình Long and Long Khánh. The 3rd Army Corps, moved towards Xuân Lộc from the north-west after they defeated the ARVN in the Central Highlands. Xuân Lộc was at the crossroads of Highway 1 (which ran the length of South Vietnam) and Highway 20 (which ran from the Central Highlands through Da Lat) and it controlled the eastern approach to the huge military bases at Bien Hoa/Long Binh and then Saigon.