On the government's side were the Colorados, three cavalry divisions at Campo Grande; three Asunción divisions (infantry, signallers and engineers) and the artillery division from Paraguari equipped with World War II American weapons, specifically M1 Garand rifles and American-supplied captured weapons such as the German MP 40 submachine gun, giving the Colorados superior firepower. Most importantly, Argentina under Juan Perón gave vital support to the government without which they might well have fallen.[citation needed]