Bombs will not gib people because the explosive force travels over a full 360 arc at the same speed, so every part of the body is pushed backwards at the same time.
Large, high caliber rifles and small explosive artillery could, technically Gib someone on rare occasions, but actual 'exploding' people are very rare on the battlefield. What a charming discussion

That said, there was nothing more
satisfying than firing a rocket into a mass of Imps and Zombies in Doom

I guess it is more sensible to spread that kind of destructive force around a larger area, and thus wound 6 men as opposed to gibbing one, unfortunately, in real war, they don't get back up and start running around at 67% health
