Unless the walls were well washed, painted with Killz or other stain coverup primer, and repainted with regular wall paint, your walls will likely be yellowed with tar and nicotine stains, as the oils attract dirt and dust. It isn't easy to remove with simple soap and water. Just think what happens to human and pet lungs, and other organs?
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.