For those that are interested in the U-Boat side of things, I found the biography of Werner Hirschmann, the engineering officer on U-190 a fascinating story. The boat was surrendered to the Canadian navy at the end of the war and he tells of his life as a POW. Eventually he returns to Canada and becomes a citizen. He was still alive in Toronto in the late 90's. Excellent book full of interesting personal stuff that he did during his training
http://www.uboat.net/books/item/2248