The elite ARVN units still attempted to keep the NVA from entering the city. For example, the Newport bridge the eastern entrance of Saigon, was contested many times.
''Despite the increased disintegration of the ARVN, the PAVN faced heavy resistance, even counterattack attempts to push them out. The outskirts and downtown of the city become battlefields, where PAVN/VC fought against a rag-tag formation of ARVN soldiers who made their way into Saigon, but couldn't be evacuated. These men, betrayed by their commanders, either stripped off their uniforms and hid, or made suicidal assault at the enemy, hoping for a quick death.
Those units tasked with capturing key structures found themselves at the receiving end of a more disciplined force commanded by officers denied their evacuation. These men would take advantage of the equipment left over by their escaped comrades and set a perimeter around the city. However, despite all efforts, a loose combination of troops either wanting to flee or wanting to kill as many communists as possible before their deaths, mostly leaderless and cut off from supplies, could not hope to stand against a disciplined army with artillery and armored support.
''
What happened in Kabul is a debacle of the hardest order. It is like if the VC simply entered Saigon, simply asked to take over and they came into power.