Ratnu, Inder Dan. Alternative to Chruchill: The Eternal Bondage
Divergence: 1940 CE
What if: Churchill did not become prime minister in May 1940, and Great Britain subsequently lost the mass of its army at Dunkirk and the RAF was wiped out in the Battle of Britain.
Summary: Detailed history in which the Nazis go on to world conquest after a successful invasion of Britain.
Published: Churchill Center 1995.