WHAT ALL HAPPENED APRIL TO MAY 1941
Find out what all happened April to May 1941

World War II: Yugoslav royal colonel Dragoljub Mihailović starts fighting with German occupation troops, beginning the Serbian resistance. (13. May 1941)

World War II: The Ustashe, a Croatian far-right organization is put in charge of the Independent State of Croatia by the Axis Powers after the Axis Operation 25 invasion. (14. April 1941)

World War II: The German battleship Bismarck is sunk in the North Atlantic killing almost 2,100 men. (27. May 1941)

World War II: German forces launch a major attack on Tobruk. (1. May 1941)

A Luftwaffe air raid on Dublin, Ireland, claims 38 lives. (31. May 1941)

Emperor Haile Selassie returns to Addis Ababa, Ethiopia; the country commemorates the date as Liberation Day or Patriots' Victory Day. (5. May 1941)

The German Luftwaffe launches a bombing raid on Nottingham and Derby (8. May 1941)

World War II: Rommel attacks Tobruk. (14. April 1941)

Bob Feller of the Cleveland Indians throws the only Opening Day no-hitter in the history of Major League Baseball, beating the Chicago White Sox 1-0. (16. April 1941)

World War II: The Communist Party of Slovenia, the Slovene Christian Socialists, the left-wing Slovene Sokols (also known as "National Democrats") and a group of progressive intellectuals establish the Liberation Front of the Slovenian People. (27. April 1941)

World War II: Battle of Crete – German paratroops invade Crete. (20. May 1941)

Anglo-Iraqi War: The United Kingdom completes the re-occupation of Iraq and returns 'Abd al-Ilah to power as regent for Faisal II. (31. May 1941)

World War II: The Italian convoy Duisburg, directed to Tunisia, is attacked and destroyed by British ships. (16. April 1941)

The Blockade Runner Badge for the German navy is instituted. (1. April 1941)

First flight of the Gloster E.28/39 the first British and Allied Jet Aircraft. (15. May 1941)

World War II: German troops enter Athens. (27. April 1941)

Following the coup d'état against Iraq Crown Prince 'Abd al-Ilah earlier that year, the United Kingdom launches the Anglo-Iraqi War to restore him to power. (2. May 1941)

World War II: The Axis powers in Europe establish the Independent State of Croatia from occupied Yugoslavia with Ante Pavelić's Ustaše fascist insurgents in power. (10. April 1941)

World War II: Rudolf Hess parachutes into Scotland to try to negotiate a peace deal between the United Kingdom and Nazi Germany. (10. May 1941)

World War II: Nazi Germany launches Operation 25 (the invasion of Kingdom of Yugoslavia) and Operation Marita (the invasion of Greece). (6. April 1941)