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German troops enter Austria, 12 March 1938. Nazi dictator Adolf Hitler pressured his native Austria into unification (Anschluss) with Germany in the 1930s. After a coup d'etat by the Austrian Nazi Party on 11 March 1938, German troops entered the country the following day. Hitler later made a triumphant visit to Vienna. (KEYSTONE/HERITAGE IMAGES/Keystone Archives)