You could join the ranks as a regular marine. If your skills were good enough for the spartan program we would have taken you from your at a very young age and trained you. However if you join the ranks as a marine just keep in mind that you are pretty much useless at legendary difficulty and if you want to survive just stand behind a spartan preferably master chief.
OH and if you portray exceptional skill during training you might be approached for a position as a hell jumper (odst). So good luck my friend and remember if its a plasma grenade it sticks.
Stop believing that science fiction movies are reality.
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.