https://en.wikipedia.org/wiki/Battle_of_Kunersdorf
The Battle of Kunersdorf occurred on 12 August 1759 near Kunersdorf (now Kunowice, Poland) immediately east of Frankfurt an der Oder (the second-largest city in Prussia).Part of the Third Silesian War and the wider Seven Years' War, the battle involved over 100,000 men.An Allied army commanded by Pyotr Saltykov and Ernst Gideon von Laudon that included 41,000 Russians …