Which war as well as the Seven Years' Warwas this decisive battle part of that resulted in the The Miracle of the House of Brandenburg?
Miracle of the House of Brandenburg: The Miracle of the House of Brandenburg is the name given by Frederick II of Prussia to the failure of Russia and Austria to follow up their victory over him at the Battle of Kunersdorf on 12 August 1759 during the Seven Years' War. Battle of Kunersdorf: The decisive Battle of Kunersdorf occurred on 12 August 1759 near Kunersdorf (Kunowice), immediately east of Frankfurt an der Oder (the second largest city in Prussia). Battle of Kunersdorf:  Part of the Third Silesian War and the wider Seven Years' War, the battle involved over 100,000 men.
Third Silesian War