A single notorious tactic was the "Satan‘s Paintbrush", a technique of walking the hearth of the machine gun backwards and forwards along a line of advancing troops. Canadian Captain John Coray Henry‘s Vickers gun workforce applied this technique to consistently defend their situation, raking many German attackers with constant fireplace. https://machguns.com/product/lot-1447-u-s-auto-ordnance-1928a1-class-iii-nfa-cr-fully-transferable/