Joseph P. Farrell makes a pretty good case that the Third Reich was working on the Hydrogen Bomb and may have actually developed the Atomic Bomb as a trigger for the Hydrogen Bomb.
Reich of the Black Sun, by Joseph P. Farrell, Adventures Unlimited Press, Kempton, Illinois, 2004. http://www.adventuresunlimitedpress.com/
This book is about the strange science research of the SS in Nazi Germany, mostly during World War Two. The book is mostly about the nuclear weapons research, but also covers computers, and all kinds of strange weapons and technology. For those interested in Weird War Two types of wargames, this book has some interesting scenarios and technology.
The book also follows the post war developments of some of the technology pioneered by the Nazis. The book discusses flying discs, and various kinds of nuclear materials, and the possibility that the Nazis may have planned on using a UFO flying saucer to drop hydrogen bombs on New York City. Interesting theories, but probably not very good history or science. The book was only $17 so a worthwhile investment for the new wargame scenarios I will get out of it.