Anywhere between 3.2 and 12 on a newer machine gun WW2 weapons such as Browning M3 "grease gun" and Thompson submachine gun could fire at a rate of 5 to 12.5 rounds per Second The German medium machine gun, MG42, had a rate of 25 rounds per second. The modern US M-60 evloved from this gun Later guns such as AK-47 and M-16 could fire from 12 to 15 rounds per second.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.