Query: What was the result of the Austrian invasion?
Context: However, in November and December of 1757, the whole situation in Germany was reversed. First, Frederick devastated Prince Soubise's French force at the Battle of Rossbach on 5 November 1757 and then routed a vastly superior Austrian force at the Battle of Leuthen on 5 December 1757 With these victories, Frederick once again established himself as Europe's premier general and his men as Europe's most accomplished soldiers. In spite of this, the Prussians were now facing the prospect of four major powers attacking on four fronts (France from the West, Austria from the South, Russia from the East and Sweden from the North).