No. It is very easy to make a working grenade from a surplus hull. Not only is the information on how to do it very available and extremely simple, a small amount of imagination is all that's necessary in the absence of any technical information.
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.