The main terms of the Versailles Treaty were: (1) the surrender of all German colonies as League of Nations mandates; (2) the return of Alsace-Lorraine to France; (3) cession of Eupen-Malmedy to Belgium, Memel to Lithuania, the Hultschin district to Czechoslovakia, (4) Poznania, parts of East Prussia and Upper Silesia to Poland; (5) Danzig to become a free city; (6) plebiscites to be held in northern Schleswig to settle the Danish-German frontier; (7) occupation and special status for the Saar under French control; (8) demilitarization and a fifteen-year occupation of the Rhineland; (9) German reparations of £6,600 million; (10) a ban on the union of Germany and Austria; (11) an acceptance of Germany's guilt in causing the war; (11) provision for the trial of the former Kaiser and other war leaders; (12) limitation of Germany's army to 100,000 men with no conscription, no tanks, no heavy artillery, no poison-gas supplies, no aircraft and no airships; (13) the limitation of the German Navy to vessels under 100,000 tons, with no submarines; Germany signed the Versailles Treaty under protest. The USA Congress refused to ratify the treaty.