I expect you'd need more than one dude peeing on the barrel too. That was more of a looks bad ass movie moment with the one dude.
But less about being guns and more GIF!
Chinese Republic soldiers advancing under increasing enemy artillery and machine gun fire.
British soldiers going over the top at the end of the final episode of Blackadder (fuck that Back And Forth, It ended here).
Dead Victorian era Prussians on the battlefield.
Confederate line infantry marching down the road to reinforce their lines during a battle.
Mexican-American War era American cavalry and horse guns riding into position.