And we know that Chancellor Engelbert Dollfuss might use force against fellow Austrians as he had done in the 1st Civil War in 1934, if he survives a second assassination attempt after he has told Hitler that Austria would never become part of Germany he might decide to crush the Austrian Fascist who might rise up with support of Germany causing first a 2nd Civil War and then the Germans invading in order to in their view, restore order and peace in Austria, then we might see a referendum taking place which will end up making Austria part of Germany.During this period Austria was close to Italy and there is a strong possibility that it might very well have intervened. The Italians had a fairly large military and a well established air Force. As for Germans not shooting their fellow Germans Brutal military force was used against the Communist in Germany during the 1920s and the Reichwehr was period to killed the Nazis during the same period. It is my belief based on what I read that if ordered to the Austrian Army would have resisted an invasion. Italy and France would have intervend ..One must remember that in this period the Heer was not very capable of fighting any kind of war and even in 1938 if the Czechs had fought the German Army would have suffered greatly