It's some stupid rule in the Geneva conventaion that you cannot shoot at personnel with heavy calibers, supposedly these inflict inhumane suffering, I don't know about you, but I'd rather get my head blow off by a 30mm than bleed to death from a few 5.56 wounds oOo:


I think its post WWII, because the first stories about this rule came from 'Nam, where Marine commanders told their M2 (.50 caliber) gunners to aim a Charlie's canteens or backpacks, and that overpenetration is "unfortunate collateral damage" biggrin: