1 September: Germany invades Poland.
3 September: Britain and France declare war on Germany.
17 September: Soviet Union invades eastern Poland.
27 September: Surrender of Warsaw.
30 November: Soviet Union invades Finland.
13 December: Battle of River Plate in the South Atlantic.
12 March: Finland signs peace treaty with Soviet Union.
9 April: Germany invades Denmark and Norway.
10 May: Germany invades Belgium, Holland and Luxembourg.
13 May: Bombing of Rotterdam.
15 May: Holland surrenders to Germany.
26 May: Start of the Dunkirk evacuation.
28 May: Belgium surrenders to Germany.
10 June: Capitulation of Norway.
10 June: Italy declares war on Britain and France.
14 June: Germans occupy Paris.
18 June: Soviets annex Baltic states.
22 June: France signs armistice with Germany.
30 June: Germany begins occupation of the Channel Islands.
3 July: British sink French fleet docked in Mers-el-Kebir, Algeria.
11 July: Marshal Pétain becomes head of French Vichy government.
13 August: Battle of Britain begins,
13 September: Italy invades Egypt.
15 September: Climax of Battle of Britain.
27 September: Germany, Italy and Japan sign Tripartite Pact.
7 October: German army moves into Romania.
28 October: Italy invades Greece.
14 November: Bombing of Coventry.
14 November: Greek army repels Italians back into Albania.
22 November: Italian army defeated by Greeks.
9 December: British offensive begins in North Africa.
22 January: British take Tobruk.
11 March: USA passes Lend-Lease Bill.
25 March: Yugoslavia signs Tripartite Pact.
27 March: Yugoslavian government overthrown – Yugoslavia leaves Pact.
30 March: German Afrika Korps begins offensive in North Africa.
6 April: Germany invades Yugoslavia and Greece.
12 April: Germans occupy Belgrade.
13 April: Soviet Union and Japan sign neutrality pact.
17 April: Yugoslav army surrenders to Germans.
27 April: Germans capture Athens.
20 May: German airborne invasion of Crete.
24 May: The HMS Hood is sunk
27 May: The Bismarck is sunk.
31 May: British forces in Crete defeated.
22 June: Operation Barbarossa – Germany invades Soviet Union.
22 June: Italy and Romania declare war on Soviet Union.
26 June: Finland declares war on Soviet Union.
7 July: German forces enter Estonia.
16 July: Germans capture Smolensk.
21 August: First Arctic Convoy to Russia leaves Iceland.
28 August: German forces take Tallinn.
8 September: Siege of Leningrad starts.
19 September: Germans capture Kiev.
24 October: Germans capture Kharkov.
3 November: Germans capture Kursk.
5 December: Germans abandon attack on Moscow.
7 December: Japanese attack on Pearl Harbor.
7 December: Japan invades Malaya.
8 December: USA and Allies declare war on Japan. (Soviet Union remains neutral.)
10 December: British battleships Prince of Wales and Repulse sunk off Malaya.
11 December: Germany (and Italy) declares war on USA.
11 December: Japan attacks Burma.
25 December: Japanese capture Hong Kong.
2 January: Japanese capture Manila.
13 January: Soviets recapture Kiev.
21 January: Japan invades Burma.
15 February: Singapore falls to the Japanese.
27 February: Battle of Java Sea.
8 March: Japanese occupy Rangoon.
9 March: Japanese conquest of Java completed.
9 April: Japanese take Bataan.
30 April: Japanese close Burma Road.
6 May: Fall of Corregidor and surrender of US forces in the Philippines.
4–8 May: Battle of Coral Sea.
27 May: Japanese complete conquest of Burma.
28 May: Germans defeat Soviets at Kharkov.
30 May: RAF bomb Cologne.
4 June: Battle of Midway.
1 July: First Battle of El Alamein begins.
7 August: USA lands on Guadalcanal.
19 August: Britain’s Dieppe Raid.
23 August: Stalingrad offensive begins.
23 October: Second Battle of El Alamein begins.
8 November: Allies invade French North Africa.
11 November: Germans occupy Vichy France.
14 January: Casablanca Conference opens.
23 January: British enter Tripoli.
2 February: German surrender at Stalingrad.
8 February: Soviets recapture Kursk.
19 April: Jewish uprising in Warsaw Ghetto begins.
7 May: Allies take Tunis.
13 May: Axis forces in North Africa surrender.
16 May: Jewish uprising in Warsaw Ghetto suppressed.
4 July: Battle of Kursk begins.
10 July: Allies land in Sicily.
25 July: Overthrow and imprisonment of Mussolini.
17 August: Allied conquest of Sicily complete.
23 August: Soviets recapture Kharkov.
3 September: Italy signs armistice.
3 September: Allies land in southern Italy.
8 September: Italy surrenders. Germans occupy Rome.
12 September: Mussolini rescued.
23 September: Mussolini declares fascist government in northern Italy.
25 September: Soviets retake Smolensk.
1 October: Allies capture Naples.
13 October: Italy declares war on Germany.
6 November: Soviets retake Kiev.
28 November: Teheran Conference opens.
22 January: Allies land at Anzio.
27 January: End of Leningrad siege.
15 February: Allies destroy monastery of Monte Cassino.
18 March: RAF bombs Hamburg.
7 April: Japanese attack Kohima.
18 May: Allies take Monte Cassino.
4 June: Allies enter Rome.
6 June: Operation Overlord – Allied invasion of Normandy.
13 June: German ‘V-1’ offensive begins against Britain.
27 June: USA captures Cherbourg.
20 July: Attempted German assassination of Hitler.
1 August: Polish uprising in Warsaw.
15 August: Allies invade southern France.
25 August: Allies liberate Paris.
3 September: Allies liberate Brussels.
4 September: Allies liberate Antwerp.
5 September: Soviet Union declares war on Bulgaria.
8 September: Bulgaria surrenders to Soviet Union.
8 September: German ‘V-2’ offensive begins against Britain.
17 September: Operation Market Garden – Allied airborne assault on Holland.
21 September–2 October: Battle of Leyte Gulf.
26 September: Estonia occupied by Soviet Union.
1 October: Soviets enter Yugoslavia.
2 October: End of Warsaw uprising.
4 October:Allies land in Greece.
14 October: Allies liberate Athens.
19 October: USA invades Philippines.
20 October: Liberation of Belgrade.
23 October: Soviets enter East Prussia.
4 November: Surrender of Axis forces in Greece.
16 December: German attack through Ardennes – Battle of the Bulge begins.
1 January: Germans withdraw from Ardennes.
17 January: Soviets liberate Warsaw.
26 January: Soviets liberate Auschwitz.
27 January: ‘Burma Road’ reopened.
30 January: Sinking of the German ship, the Wilhelm Gustloff.
4 February: Allies take Manila.
4 February: Yalta Conference opens.
13 February: The RAF and USAAF bomb Dresden.
19 February: Japanese evacuate Mandalay.
19 February: USA invades Iwo Jima.
23 February: USA retakes Manila.
7 March: USA crosses the Rhine.
17 March: USA captures Iwo Jima.
21 March: British retake Mandalay.
1 April: USA invades Okinawa.
11 April: Soviets and Yugoslavs sign treaty.
12 April: US President Roosevelt dies, replaced by Harry Truman.
23 April: Soviets enter Berlin.
25 April: Soviet and US forces meet at the River Elbe.
28 April: Mussolini captured by partisans and executed.
30 April: Hitler commits suicide.
2 May: German forces in Italy surrender.
3 May: British retake Rangoon.
4 May: German forces in Holland, Denmark and north-west Germany surrender.
7 May: German unconditional surrender to the west.
8 May: German unconditional surrender to the east.
9 May: Liberation of Channel Islands.
22 June: US forces capture Okinawa.
16 July: Potsdam Conference opens.
6 August: Atomic bomb dropped on Hiroshima.
8 August: Soviet Union declares war on Japan.
9 August: Atomic bomb dropped on Nagasaki.
14 August: Japan agrees to surrender.
2 September: Formal Japanese surrender.
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