That will get your attention
A relatively quiet day during the Battle of the Bulge: Posed U.S. Army Signal Corps photo of an 82nd Airborne Div machine gun nest “somewhere in the Ardennes.”
Note the big M2 .50-caliber Browning heavy machine gun in a ground defense role with a spare barrel literally chilling out to the left. “Ma Deuce” still fills this same role today, and will likely for generations to come. Turns out you just can’t beat 100~ rounds of 671-grain APIT headed out per minute as long as the ammo holds up.
Also, note the M1919 .30-06 light Browning to the right for close-in work. Together with the above set-up, this one post can own that field out to 2,000m against advancing infantry– until the StuGs and panzers show up anyway, at which point it becomes time to rapidly displace to the rear.