Rattles, horns and whistles ended up also adopted as indicates of warning troops and offering them time to placed on protecting tools during fuel attacks. More essential tactically have been “SOS barrages”, fired in response to flares sent up by infantry experiencing enemy counterattacks. SOS barrages exploited the “crushed-zone” of https://machguns.com/product/lot-1496-rock-island-armory-m60-machine-gun-class-iii-nfa/