All too true. When we left, massiver aid was preposed, but congress disposed.
In 1975, the South Vietnamese infantryman was restricted to 30 bullets a month (that’s one clip per MONTH). Half the air force and helicopters were grounded for lack of spare parts.
Because of fuel cost increases after the 1973 OPEC decisions, many tracked vehicles couldn’t be operated (or at least in the way the US used them).
By contract, the northern army was totally resupplied and equipped, before being sent on its offensive.
Who do you think would win under those circumstances?
The congress, refusing any more aid, threw away what
America had fought for during the preceding decade.