Signals corp photo so American signallers ? Inspecting mixed arms in apparently abandoned paradrop weapons container. Note wheels and conical "crumple end" 

parachute weapons container

Lighter, Cheaper, and Just as Good
CAMP DAVIS, N.C. -- The deadly weapon being used by Pvt. Martin Schirald of Youngstown, Ohio, at Camp Davis is the Army's new .45 caliber sub machine gun -- the "M3". Five and one half pounds lighter than the widely used Thompson sub machine gun, the new weapon is much cheaper to manufacture and just as effective in battle.(5-6-1944)
greetz,brummbar

Grease gun

Soldiers of the 157th Infantry Regiment, 45th Infantry Division, regrouping and resting, before resuming combat at Anzio, Italy.