It was a common custom during the time of Mohammad for victorious armies...Persians, Romans, Christians, Muslims Greeks...etc, etc, to make sex slaves of conquered women. Mohammad did not need any revelation from his Allah to get approval to have sex with captured women; it was common practice.
Salam Slave girls in the Qur'an were only inheritance before the coming of slam . During the era of Muhammad pbuh and his companions slavery was abolished gradually so now there is no slavery In those days slave girls were treated as property of the owner so it against with mankind.
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.