Which was a military achievement of Frederick the Great?
doubling the size of the Prussian army
reforming the training program for the Prussian army
winning territory in the War of the Austrian Succession
winning the Thirty Years’ War
Winning territory in the War of the Austrian Succession. He won Silesia in the treaty of Aix La Chapelle in 1748. With the acquisition of Silesia, Prussia became a major European power