The Treaty of Saint-Germain-en-Laye was signed on 10 September 1919 by the victorious Allies of World War I on the one hand and by the Republic of German-Austria on the other. Like the Treaty of Trianon with Hungary and the Treaty of Versailles with the Weimar Republic, it contained the Covenant of the League of Nations and as a result was not ratified by the United States but was followed by the US–Austrian Peace Treaty of 1921.

The Armistice of Villa Giusti or Padua Armistice was an armistice convention with Austria-Hungary which de facto ended warfare between Allies and Associated Powers and Austria-Hungary during World War I. Allies and Associated Powers were represented by Italy. The armistice protocol together with a supplementary protocol was signed on 3 November 1918 in the Villa Giusti, outside Padua in the Veneto, Northern Italy, and took effect 24 hours later. This armistice applied only on Austria because Hungary later signed the separate Belgrade armistice.