Medical Death

An American student in late high school [10th Grade] who is a massive Metal Gear Solid but mainly obsessed with anything Halo also into history mainly WW2, Korean War, and Vietnam war. He died and was informed that a large group of religious fanatics of an cult built a Time machine sending large numbers into these said time periods and it is up to him to see for what these wars would produce as for the question of driving him to madness or do well in his own version of a Crusade? Deus vault!