Nazi conquest of Great Britain

1940:
* June 22: France signs an armistice with Germany, effectively surrendering and giving control of much of Western Europe to the Nazis.
* August 13: The Battle of Britain begins, with the Luftwaffe launching a massive aerial bombardment of British cities and airfields.
* September 17: Hitler postpones Operation Sealion, the planned invasion of Britain, due to the failure of the Luftwaffe to gain air superiority.
1941:
* January 1: The United States enters the war after the Japanese attack on Pearl Harbor.
* May 10: Operation Sealion is launched, with German forces invading the south coast of England and quickly securing a beachhead.
* May 27: British forces launch a counterattack, but are pushed back by the superior German forces.
* June 5: German forces capture London, effectively ending organized British resistance.
* June 22: The Soviet Union launches a massive offensive against Germany on the Eastern Front, forcing the Nazis to divert resources away from Britain.
1942:
* January 1: The Nazi occupation of Britain continues, with the German military establishing control over the country and imposing its rule.
* May 8: The Allies win the Battle of El Alamein in North Africa, marking a turning point in the war in that theater.
* November 8: The Allies invade North Africa, and begin pushing German forces back towards Europe.
1943:
* January 1: The Nazi regime consolidates its control over Britain, using the country as a base for further operations in Europe.
* July 10: The Allies invade Sicily, marking the beginning of the end for Mussolini's regime in Italy.
* September 3: Italy surrenders to the Allies, and Mussolini is removed from power.
* November 28: The Allies hold the Tehran Conference, discussing plans for the invasion of Western Europe.
1944:
* January 1: The Nazi regime continues to consolidate its power in Britain, but faces increasing resistance from the British population.
* June 6: The Allies launch the D-Day invasion of Normandy, marking the beginning of the end for the Nazi regime in Europe.
* July 20: A group of German officers attempt to assassinate Hitler, but fail.
* August 25: Paris is liberated by Allied forces, marking a major victory for the Allies in Europe.
1945:
* January 27: The Soviet Union liberates the Auschwitz concentration camp, revealing the horrors of the Nazi regime to the world.
* April 30: Hitler commits suicide in his bunker in Berlin.
* May 8: Germany surrenders to the Allies, and the war in Europe officially ends.
* August 15: Japan surrenders to the Allies, and the war officially ends.
In this alternate timeline, the Nazi regime successfully invades and occupies Britain, giving it a valuable base of operations for further military expansion in Europe. The course of the war in other theaters may have been affected by the success of the invasion, as Germany would have had more resources and troops available to deploy elsewhere. However, the eventual defeat of Germany by the Allies is likely, as the Nazi regime's rule in Britain would have faced growing resistance from the population and from Allied forces. The long-term effects on world history, however, would have been significant, as the success of the Nazi regime in Europe would have resulted in vastly different political, economic, and social systems than those that emerged after the war.