In the Philippines, the moslem Juramentados would get drugged up then go on a killing spree. It was found the .38 long colt was useless against them, so the US Army rushed back into service some .45 Colt Single Action Army pistols.
They also began development of what would be the .45 ACP as it seemed to put down the Juramentados real well.
Now we are back to the 9MM (.355 cal) to use against hopped up moslems.
In my job training we were told to always ensure being one up. “If he has a knife make sure you have a gun, a handgun have a shot gun, a shot gun a rifle.” To one up these cockroaches a flame thrower or a main gun with canister rounds works for me.