The Soviet Union (USSR) and Finland fought the Winter War, the First Soviet-Finnish War. It started with a Soviet attack of Finland on 30 November 1939, three months after World War II broke out an ...

Throughout the first eight months of World War II, there was just one short military ground action on the Western Front, when French troops invaded Germany's Saar territory. Then, on 1 Septembe ...

The attack of Poland, also known as the September Campaign, the 1939 defensive war, and the Poland campaign, was a Nazi Germany and Soviet Union attack on the Republic of Poland that marked the sta ...

The Dunkirk evacuation, codenamed Operation Dynamo and often known as the Miracle of Dunkirk, or simply Dunkirk, was a World War II evacuation of Allied soldiers from the beaches and harbor of Dunk ...

The League of Nations was the initial worldwide organization whose principal goal was to keep the world in harmony. It began operations on 10 January 1920, following the Paris Peace Conference that ...

The formal conference of the victorious Allies in 1919 and 1920 after the end of World War I to set the peace conditions for the defeated Central Powers was known as the Paris Peace Conference. It ...

The Armistice of 11 November 1918, contracted at Le Francport near Compiègne, ended warfare on land, sea, and air among the Associates and their final opponent, Germany. The Ottoman Empire, ...

During the First World War, Operation Michael was a massive German military operation that kicked off the German Spring Offensive on March 21, 1918. It was launched from near Saint-Quentin, France, ...

The Lausanne Treaty (Traite de Lausanne) was a negotiated peace signed during the Lausanne Conference in 1922–23 and signed on 24 July 1923, in the Palais de Rumine Lausanne, Switzerland. The ...

The Treaty of Sevres (Traite de Sevres) was signed in 1920 between the World War I Allies and the Ottoman Empire. Vast swaths of Ottoman territory were lost to France, the United Kingdom, Greece, a ...