Original: August 12 -- Battle of Kunersdorf : Frederick the Great is rebuffed in bloody assaults on the combined Austro -- Russian army of Pyotr Saltykov and Ernst von Laudon .
Simplified: August 12 - Battle of Kunersdorf - Frederick the Great is rebuffed in bloody assaults on the combined Austro-Russian army of Peter Soltikov and Gideon von Loudon .