At 07:18 -the G.I. has the tailgate halfway down and at 07:21 -the tailgate is back up in the closed position.
Both Max and Elsie are shoot Colt 1911's. 8 round ma capacity. They shoot way more than 8 rounds each. To add to the error, they leave behind NO 40'which probably have ammo remaining. More Hollywood armored stupidity.
A man in a US Army sergeant's full uniform is shown wearing a full heavy beard. No one seems to notice. No one calls him out for this obvious violation of the dress code.
"Mouth-to-mouth" resuscitation of the "pinch the nostrils and breathe into the victim's mouth" type wasn't invented until 1956.