How to prepare -- take up running. The army will make you strong enough without problem -- but developing the stamina to do it day after day is the most difficult part. So start now.
Run. As to learning -- graduate from school. The sergeants will take it from there.
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.