He carried his personal weapon+ammo, he carried his combat kit(water bottle, helmet, gasmask, bayonet or knife, probably some extra clothes, maybe a shovel, etc), some grenades, extra ammo for the squad machine gun.
And on top of that the squad has to collectively carry around
an inflatble raft !
Now I now know why the german infantry had problems to keep upp with the panzers...
Had they only thrown away their rafts I bet they could have taken Moscow before the winter.

Voyrep