One notorious tactic was the "Devil‘s Paintbrush", a approach to walking the fireplace of a machine gun back and forth along a line of advancing troops. Canadian Captain John Coray Henry‘s Vickers gun workforce employed this process to regularly protect their posture, raking many German attackers with steady fireplace. By https://machguns.com/product/american-180-tuned-by-val-cooper-excellent-w-extras-b01033/