>>547841
Depends.
Frankly it depends the size of what you seized and where you're at. Same with dead.
Dead it's typically easy: you give them to the local cleric/police to do what they usually do (if they want to parade them and let them rot on a dung pile, it's their problem they're local civilian authority and they're the fucking local norm), if there is no such thing = mass grave (typically you pay the locals to do it).
For weapons it's two possibility not much = disabling them (you take out the bolts/hammers, fuck them up or just take them with you and toss them in a river/go bury them somewhere at night), if you have time/equipment you document them (then sent it up to chain for military intelligence). Ammo you blow up.
If it's a lot, someone from military intelligence makes an inventory (types, serials), then they either go to destruction or an alphabet guy takes them (to give them back to their rightful owners that you just took them from or will have too in a couple of years…).
If you're in FB Nowhere you inspect them and make an armory out of the ones that might be useful/you have plenty of ammo for.