On 8 September 1514, the Battle of Orsha between Lithuanians, commanded by the Grand Hetman Konstanty Ostrogski, and Muscovites was fought. According to ''Rerum Moscoviticarum Commentarii'' by Sigismund von Herberstein, the primary source for information on the battle, the much smaller army of Poland–Lithuania (under 30,000 men) defeated a force of 80,000 Muscovite soldiers, capturing their camp and commander. The battle destroyed a military alliance against Lithuania and Poland. Thousands of Muscovites were captured as prisoners and used as labourers in the Lithuanian manors, while Konstanty Ostrogski delivered the captured Muscovite flags to the Cathedral of Vilnius.