I have read Storm of Steel. Helmet for my Pillow is on my list. I just found out about The Jungle is Neutral and will be adding that as well
Memoirs involving any conflict in history (not just WW2) are welcome!
I strongly recommend "Company Aytch" by Sam Watkins, the only book I know of that gives you a glimpse of the American Civil War through the eyes of a foot soldier. Fascinating read!