Quote from Lucrum:
You may want to review your history.
"On December 13, 1974, North Vietnam violated the Paris peace treaty by attacking into the South. When North Vietnam violated the 1973 cease-fire agreement and invaded the South again in 1975, Ford desperately asked Congress for funds to assist and re-supply the South before it was overrun. Congress refused...Much of the North's material and financial support came from the communist bloc. Within South Vietnam, there was increasing chaos...On March 10, 1975, General Dung launched Campaign 275, a limited offensive into the Central Highlands, supported by tanks and heavy artillery...Thieu ordered a retreat. The president declared this to be a "lighten the top and keep the bottom" strategy. But in what appeared to be a repeat of Operation Lam Son 719, the withdrawal soon turned into a BLOODY rout...As the ARVN tried to disengage from the enemy, refugees mixed in with the line of retreat. The poor condition of roads and bridges, damaged by years of conflict and neglect, slowed Phu's column. As the North Vietnamese forces approached, panic set in. Often abandoned by their officers, the soldiers, and civilians, were shelled incessantly. The retreat degenerated into a desperate scramble for the coast. By April 1 the "column of tears" was all but annihilated..., the VPA opened the siege of Hue. Civilians flooded the airport and the docks hoping for any mode of escape. Some even swam out to sea to reach boats and barges anchored offshore. In the confusion, routed ARVN soldiers fired on civilians to make way for their retreat. On March 31, after a three-day battle, Hue fell..., three North Vietnamese divisions attacked Xuan Loc, 40 miles (64 km) east of Saigon. The North Vietnamese met fierce resistance at Xuan Loc from the ARVN 18th Division. For two bloody weeks, severe fighting raged as the ARVN defenders made a last stand to try to block the North Vietnamese advance. By April 21, however, the exhausted garrison surrendered...By the end of April, the Army of the Republic of South Vietnam had collapsed on all fronts. Thousand of refugees streamed southward, ahead of the main communist onslaught. On April 27, 100,000 North Vietnamese troops encircled Saigon. The city was defended by about 30,000 ARVN troops. To hasten a collapse and foment panic, the VPA shelled the airport and forced its closure...Chaos, unrest, and panic broke out as hysterical South Vietnamese officials and civilians scrambled to leave Saigon. Martial law was declared..., VPA troops overcame all resistance, quickly capturing key buildings and installations. A tank crashed through the gates of the Presidential Palace, and at 11:30 a.m. local time the NLF flag was raised above it."