Old School Gun Handling in the Field

Here is a sample from the mid 50s.  These actors are either in the military, or served at one point in the relative near past.  There was nigh universal selective service requirements, obviously, and these fellows could even be actual WWII or Korean War veterans, and toted weapons about for realz, yo.

They don't carry at low ready, with the butt of the weapon in their shoulder and the muzzle down.  As that is more a modern method with pistol grip rifle.  No, the rifle is at Port arms, like in parade ground drill (1), the shorter submachinegun is cradled under the arm pit (2), and the 1911 is, per usual, unsafely toted (3).  Just point that at your buddy, Fred, finger on the trigger, safety off.  Jeez.

This guy explains it in more detail and is worth a watch.