When we were on operation, it could last months before we were in a base camp. Outside the wire, anyone carrying an M16 carried at least 20x20 round mags. Some carried 30. Basic load for an m-60 was several thousand rounds carried in bags and ammon cans. No pancho via style over the shoulder bandoleers. Thumper bunnies carried 40 HE and an assortment of smoke and flechette. Each man except for grenadiers carried 4 frag grenades, a trip flare, a claymore mine and a hand held star cluster flare. Radio operators carried assorted smoke grenades and extra batteries. 3-4 LAWS were carried in each squad with them being rotated daily.
No 1911s were carried by our unit except brand new lts. After a few weeks, they sent theirs back to the base camp. The weight of a .45 and accessories was made up for by carrying extra frags and mags. The .45 was held in universal low esteem for it's excessive daily maintenance, lack of accuracy and lack of dependablility. Once the leather holsters got wet, they stayed that way for months resulting in a couple of extra pounds weight and the nightmare of keeping rust off any .45 carried in it.
In addition to our basic load of arms and ammo, we had a basic load of shovels, entrenching tools, and machetes. Additionally, a couple of demo kits were carried in rotation as well as a chain saw and a can of gasoline. It seems like there were a couple axes rotated between platoons every day.
On occasion, we would also be burdened with mortars, telephones, aiming stakes, aiming circles, mortar rounds and a couple of reels of wire.
I can't remember when we humped over a hundred yards on level ground. The rest of the time was in triple canopy jungle going straight up and down hill. Try sleeping on a 50% grade by roping off to a tree to keep from sliding down the hill.