A double-barreled shotgun? I can't see that EVER working in warfare...
During the trench warfare of the Gallipoli Campaign, Major Stephen Midgley of the Australian 5th Light Horse Regiment was widely known to use a sawn-off double barrelled shotgun while leading his troops, the weapon's effectiveness resulting in Turkish officers complaining that it was not a 'weapon of war' under international law after Midgley took one Turkish soldier's head "clean off his shoulders". Midgley was ordered by an Australian general to cease using his shotgun and switch to a conventional rifle and bayonet, to which the Major was "bitterly peeved"