Historic Event
Apr 1 Lillian Hellman's "Watch on the Rhine" premieres in NYC
Historic Event
Apr 3 British Prime Minister Winston Churchill warns Soviet leader Joseph Stalin that a German invasion is imminent
US Masters Golf
Apr 6 8th US Masters Tournament, Augusta National GC: Craig Wood wins his first major title, 3 strokes ahead of runner-up Byron Nelson; Masters' first wire-to-wire champion
- Apr 6 Beginning of operation Bestrafung - German bombers attack Belgrade (17,000 die)
- Apr 6 British major general Michael Gambier-Parry captured in North Africa
- Apr 6 German bombardment of Piraeus (munitions ship explodes)
- Apr 6 Italian forces holding Addis Ababa surrender to British & Ethiopian forces
- Apr 7 British generals O'Connor & Neame captured in North Africa
Historic Event
Apr 10 Independent State of Croatia led by Ante Pavelić established as fascist German puppet state
Historic Event
Apr 12 Vichy-France's head of government Admiral François Darlan consults with Adolf Hitler
- Apr 13 Heavy German assault on Tobruk
- Apr 13 Pact of neutrality between the USSR and Japan is signed.
- Apr 14 1st massive German raid in Paris, 3,600 Jews rounded up
- Apr 14 King Peter leaves Yugoslavia
- Apr 14 45th Boston Marathon won by Leslie Pawson in 2:30:38; his third victory in the event
- Apr 15 1st helicopter flight of 1 hr duration, Stratford, Ct
- Apr 16 Little Theater at Adelphi Strand, London closes
- Apr 17 British troop land in Iraq
- Apr 17 US Office of Price Administration forms (handled rationing)
- Apr 17 Egyptian steamer SS Zamzam attacked and later scuttled by German cruiser Atlantis (all on board rescued)
- Apr 17 World War II: The Kingdom of Yugoslavia surrenders to Germany.
- Apr 19 Bertolt Brecht's play "Mother Courage and her Children" premieres in Zurich
- Apr 19 Bulgarian troops invade Macedonia
- Apr 19 Milk rationed in Holland
- Apr 20 100 German bombers attack Athens
- Apr 20 Dodgers start to wear liners in their caps
- Apr 21 WWII: Greece surrenders to Nazi Germany
- Apr 23 Greek Army surrenders to Germany; British RAF evacuates the Greek King George II to Egypt
- Apr 24 British army begins evacuation of Greece
- Apr 24 Dutch Prince Bernhard becomes an RAF pilot