The Treaty of Versailles was one of the peace treaties at the end of World War I. It ended the state of war between Germany and the Allied Powers.It was signed on 28 June 1919, exactly five years after the assassination of Archduke Franz Ferdinand.The other Central Powers on the German side of World War I were dealt with in separate treaties.he Treaty of Versailles was one of the peace treaties at the end of World War I. It ended the state of war between Germany and the Allied Powers.