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Invasion of Poland
The invasion of Poland was a joint attack against the Republic of Poland by Nazi Germany, the Slovak Republic, and the Soviet Union; it marked the beginning of World War II. -
Battle of Bzura River
It was the most important battle of the Polish campaign and took place west of Warsaw near the Bzura River. In it, a Polish breakthrough attack was initially successful, but ultimately failed after a concentrated German counterattack. -
Battle of Dunkirk
The Battle of Dunkirk was a military operation that took place in Dunkirk, France, during World War II between the Allies and Nazi Germany. -
The tripartite conference
Germany, Italy and Japan signed the Tripartite Pact on September 27, 1940. This pact formalized the alliance between the three countries later designated as the Axis powers. -
Operation Barbarossa
Operation Barbarossa was the code name for the invasion of the Soviet Union by Nazi Germany and some of its allies, which began on Sunday, June 22, 1941. -
Declaration of war by the United States
One day after the attack on Pearl Harbor, the United States declared war on Japan, which caused Germany and Italy to declare war on the United States in the following days. -
Battle of the coral sea
This was the first carrier battle in naval history, in which U.S. and Japanese forces engaged in a conflict that resulted in significant damage to both sides, but halted the Japanese advance in the South Pacific. -
Battle of Stalingrad
The Battle of Stalingrad was a major war between the Red Army of the Soviet Union and the Wehrmacht of Nazi Germany and its Axis allies for control of the Soviet city of Stalingrad, now Volgograd, between August 23, 1942 and February 2, 1943. -
Casablanca conference
At this conference, Allied leaders, including Winston Churchill, Franklin D. Roosevelt and Charles de Gaulle, met in Casablanca, Morocco, to discuss war strategy. At this conference it was decided that the Allies would only accept unconditional surrender by the Axis powers. -
Battle of Kursk
This was the largest tank battle in history, where Soviet forces launched a massive counteroffensive against the German advance on the Eastern Front. -
Landing of Normandy
The Battle of Normandy the military operation carried out by the Allies during World War II that culminated in the liberation of the territories of Western Europe occupied by Nazi Germany. -
Bagration Operation
This Soviet offensive on the Eastern Front was one of the largest in military history. Soviet forces launched a massive attack against German forces in Belarus, inflicting huge losses on the Germans and advancing rapidly into Eastern Europe. -
Yalta conference
The leaders of the United States, the United Kingdom and the Soviet Union met in Yalta, Crimea, to discuss the terms of Germany's surrender and the establishment of a postwar world order. Important decisions were made about the division of Germany and Europe after the war. -
Atomic bombing Hiroshima
At the end of World War II, on August 6, 1945, the U.S. Army dropped Little Boy, the first atomic bomb on civilians, and leveled the Japanese city of Hiroshima. Three days later another was dropped on the city of Nagasaki.