1939 September 1 - Germany invades Poland. World War II begins.
1939 September 3 - France and Great Britain declare war on Germany.
1940 April 9 to June 9 - Germany invades and takes control of Denmark and Norway.
1940 May 10 to June 22 - Germany uses quick strikes called blitzkrieg, meaning lightning war, to take over much of western Europe including the Netherlands, Belgium, and northern France.
1940 May 30 - Winston Churchill becomes leader of the British government.
1940 June 10 - Italy enters the war as a member of the Axis powers.
1940 July 10 - Germany launches an air attack on Great Britain. These attacks last until the end of October and are known as the Battle of Britain.
1940 September 22 - Germany, Italy, and Japan sign the Tripartite Pact creating the Axis Alliance.
1941 June 22 - Germany and the Axis Powers attack the USSR with a huge force of over four million troops.
1941 December 7 - The Japanese attack the US Navy in Pearl Harbor. The next day the US enters World War II on the side of the Allies.
1942 June 4 - The US Navy defeats the Japanese navy at the Battle of Midway.
1942 July 10 - The Allies invade and take the island of Sicily.
1943 February 2 - The USSR defeats German forces at Stalingrad
1943 September 3 - Italy surrenders to the Allies, however Germany helps Mussolini to escape and set up a government in Northern Italy.
1944 June 6 - D-day and the Normandy invasion. Allied forces invade France and push back the Germans.
1944 August 25 - Paris is liberated from German control.
1944 December 16 - The Germans launch a large attack in the Battle of the Bulge. They lose to the Allies sealing the fate of the German army.
1945 February 19 - US Marines invade the island of Iwo Jima. After a fierce battle they capture the island.
1945 April 12 - US President Franklin Roosevelt dies. He is succeeded by President Harry Truman.
1945 March 22 - The US Third Army under General Patton crosses the Rhine River.
1945 May 2 - Berlin falls to soviet soldiers.
1945 May 17 - Mainland Germany is occupied by both the Allies and the USSR. The Germans retreat to Scandinavia.
1945 May 20 - Denmark is occupied by the Allies.
1945 June 6 - Germany announces an alliance with Sweden.
1945 June 12 - Finland allies with the Allies after Swedish and Soviet pressure.
1945 August 23 - Germany launches a series of attacks against the Allies and the USSR to gain some more territory.
The rest is yours to decide!
1939 September 3 - France and Great Britain declare war on Germany.
1940 April 9 to June 9 - Germany invades and takes control of Denmark and Norway.
1940 May 10 to June 22 - Germany uses quick strikes called blitzkrieg, meaning lightning war, to take over much of western Europe including the Netherlands, Belgium, and northern France.
1940 May 30 - Winston Churchill becomes leader of the British government.
1940 June 10 - Italy enters the war as a member of the Axis powers.
1940 July 10 - Germany launches an air attack on Great Britain. These attacks last until the end of October and are known as the Battle of Britain.
1940 September 22 - Germany, Italy, and Japan sign the Tripartite Pact creating the Axis Alliance.
1941 June 22 - Germany and the Axis Powers attack the USSR with a huge force of over four million troops.
1941 December 7 - The Japanese attack the US Navy in Pearl Harbor. The next day the US enters World War II on the side of the Allies.
1942 June 4 - The US Navy defeats the Japanese navy at the Battle of Midway.
1942 July 10 - The Allies invade and take the island of Sicily.
1943 February 2 - The USSR defeats German forces at Stalingrad
1943 September 3 - Italy surrenders to the Allies, however Germany helps Mussolini to escape and set up a government in Northern Italy.
1944 June 6 - D-day and the Normandy invasion. Allied forces invade France and push back the Germans.
1944 August 25 - Paris is liberated from German control.
1944 December 16 - The Germans launch a large attack in the Battle of the Bulge. They lose to the Allies sealing the fate of the German army.
1945 February 19 - US Marines invade the island of Iwo Jima. After a fierce battle they capture the island.
1945 April 12 - US President Franklin Roosevelt dies. He is succeeded by President Harry Truman.
1945 March 22 - The US Third Army under General Patton crosses the Rhine River.
1945 May 2 - Berlin falls to soviet soldiers.
1945 May 17 - Mainland Germany is occupied by both the Allies and the USSR. The Germans retreat to Scandinavia.
1945 May 20 - Denmark is occupied by the Allies.
1945 June 6 - Germany announces an alliance with Sweden.
1945 June 12 - Finland allies with the Allies after Swedish and Soviet pressure.
1945 August 23 - Germany launches a series of attacks against the Allies and the USSR to gain some more territory.
The rest is yours to decide!