Ostrowno (Campaign of Moscow).
Fought July 25 and 26, 1812, between the French corps of Ney and Prince Eugène, with Murat's cavalry, and the Russian corps of Count Osterman and General Konownitzyn. The Russians were defeated and driven back on both days, with a loss of 3,000 killed and wounded, 800 prisoners and 8 guns. The French loss was about the same.