historical reenactment of world war i with an old water-cooled automatic machine gun and the canister

bag bags barricade burlap combact communication conflict cooler cooling defence defense dig ditch dugout entrench firearm first forced foxhole great gun gunny hessian hydro italia italian italy liquid machine military mitra sack sacking sandbag sandbagged sandbags shelter submachine trench trenches war warfare water watercooled world ww1 wwi