V2s are planes, they are missiles. Civilians die all the time in war. That in itself isn't a crime.
London was a legitimate military target. Berlin was bombed first. Of course, Coventry was bombed before that.
It was ultimately a foolish decision, as it allowed RAF Fighter Command sufficient respite to never again be in danger of losing control of the air over the United Kingdom.
The Blitz happened between 1940-1941,and was by conventional bombing,not by V2 rockets which were years later. The Blitz wasn't confined to London,but major cities and strategic places throughout England,Wales,Scotland and Northern Ireland. In war,all targets are legitimate,no matter what side you are on.
Read about Dresden.
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.