The Triple Alliance. On one side, we have Germany, Austria-Hungary, and Italy, which formed the Triple Alliance. Germany and Austria-Hungary were already allies by 1879 when, worried about a threat from Russia, they formed the Dual Alliance.Italy joined the group in 1882.y 1914, then, the three nations of the Triple Alliance-Germany, Austria-Hungary, and Italy-stood against the three nations of the Triple Entente-France, Russia, and Great Britain. The spark that would set off a fire of war was about to ignite.