Neither side could make charges of thousands of troops anymore in the face of massed machine guns. The British Army lost 60,000 troops in a couple of months trying to break the German lines. So, both sides dug in, used cannon to blast out the enemy, or poison gas to burn out the enemy, and trench warware became the way to do things.
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.