Sorry if this is the wrong section.
In documentary's and movies, I always see soldiers go into battle with a backpack, blanket, and a bunch of other stuff. But later, it shows them with just basic ammo belt, canteen, and a first aid kit. What happened to the rest of it? Did they just throw it away to reduce weight? If so, they couldn't carry food, did they just eat whatever they found?
Also, wouldn't they not be allowed to do that? This was all troubling me for weeks now. Any help would be appreciated.