Today, 159 years ago, on July 3, 1866 (March 21, 1866), the Battle of Konyh Gretz broke out. On July 3, 1866, the Battle of Konyh Gretz broke out. The 140,000 Prussian armies (Commander William I, actual commander Mao) defeated the 115,000 Austrian-Saxon coalition armies in eastern Bohemia, the Oscars killed 450,000, the Prussian killed only 10,000. This battle determined the Prussian final victory in the War of Poe.