ANSWER ======= When Sri Krishna tells Arjuna to kill he is actually talking about the metaphorical struggle between good and evil within us. Sri Krishna tells Arjuna to kill the vices within us to become enlightened. Within us our vices: kama, krodha, moha, lobha, mada and matsarya or desire, anger, delusion, greed, lazyness, and envy respectively in English, are what prevent us from realizing our true divinity.
Also Krishna tells Arjuna that we are bound by duty. As a warrior, Arjuna's duty was to act as God's instrument to fight and kill the evil doers on the Kaurava side. In Hinduism a soldier is bound by duty to fight to uphold his values, traditions or people.
Likewise Arjuna had to fight to prevent evil from ruling the kingdom that was rightfully his brother's. More.
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.