During World War II, the major countries of Europe, Japan, Korea, and the Soviet Union were involved. The main fighting took place on two fronts: the Western Front and the Eastern Front.

The Eastern Front was fought between Russia, Austria-Hungary, Bulgaria, and Romania. The Western Front was fought in France, Belgium, and Luxembourg. In the end, the war was a total victory for the Allies over the Axis coalition.

The Axis included Germany, Italy, and Japan. The Allies included Great Britain, France, Russia, and other nations. Allied powers also included the United States.

The major battles of the war included the Battle of the Somme, the Battle of Verdun, and the First Battle of the Marne. It was an incredibly deadly conflict that lasted three years.

In the early part of the war, the Central Powers were comprised of the Ottoman Empire, Russia, and Austria-Hungary. The Triple Entente was composed of France, Great Britain, and Italy. The Triple Entente also allied with Serbia.

In the early part of the war, Russia, Austria-Hungary, and France supported Germany. The Triple Entente soon declared war on Serbia. In the early parts of the war, the Russian Empire lost much of its western frontier.

By 1914, the Germans had penetrated northeastern France. The Allies quickly drove them back. They then advanced further into the east.

The Great War began with the assassination of the Austrian Archduke Franz Ferdinand. In the meantime, the Turkish empire had defeated the Austro-Hungarian empire.