Marix Evans, Martin. Invasion! Operation Sea Lion, 1940
Divergence: 1940 CE
What if: Germany mounted Operation Sea Lion in September 1940.
Summary: A two-part examination of the invasion, the first examining the preparations on both sides and the second a "conjectural narrative" of the invasion which commenced Sep. 21, 1940, and which ended just a week later in failure.
Published: Longman 2004 (058277294XBUY).