Zorndorf (Seven Years' War).
Fought August 25, 1758, between the Prussians, 25,000 strong, under Frederick the Great, and a Russian army, under Fermor, which was besieging Custria. Frederick attacked the Russian entrenchments, and drove them out, with a loss of 19,000 forcing them to relinquish the siege. The Prussians lost about 11,000.