[fivefifty]

Some of the trucks etc were broken down or worn out and some might have been contractor or personal vehicles brought over that they probably decided wasn't worth the cost to take back.

The ammo, weapons and military vehicles I believe quite lot of it technically belongs (or belonged) to the Afghan national army or at least was donated to them, although from what others on here have said, they were barely functioning as a force with rampant corruption at all levels.

None of this is new, pretty much exactly the same thing happen after South Vietnam fell, with the North Vietnamese getting an even more massive stockpile of basically US military equipment that makes what the Taliban have captured pale in comparison. https://www.nytimes.com/1975/03/29/archives/arms-left-by-us-... https://militarymatters.online/weapons/vietnam-loves-america...

Not to mention all the helicopters they just pushed into the sea during the Saigon evacuation to make more space on the decks of ships.

Even back to end of world war 2 they dumped huge amounts of equipment into the sea or buried them or just left them in place to avoid the costs of taking them back. I suppose it does make some sense from an overall cost and logistical point of view, but on a personal level it does seem incredibly wasteful. https://www.warhistoryonline.com/instant-articles/wwii-ended...