Yes you can. After you make the comment it gives you time to correct it. If you go into it to make a correction you get a choice of changing it or removing it.
Without it in front of me I don't recall the exact format but I am sure you can figure it out from the comment capsule.
If you did make a mistake and you didn't catch it within 10 minutes or so then you can always submit another comment asking them to disregard that particular one.
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.