What is the main idea of the Treaty of Versailles?

The treaty was given to the German delegation to sign at Versailles, France, on May 7, 1919. The German delegates strongly objected to its severe terms. The Allies made only small changes, however. Germany was allowed to keep only a small volunteer army and navy. It was forbidden to have submarines, tanks, or an air force. It was also forced to pay a great deal of money for its share in starting the war. These payments were called reparations. The representatives of the Allies and of Germany signed the Treaty of Versailles on June 28, 1919.