In 1514, the Polish-Lithuanian army met the Ruthenians in one of the greatest European battles of the Middle Ages. After crossing the Dnieper, the Polish-Lithuanian troops took up positions and began their preparations for battle. Ruthenians launched their attack first. They attacked the Lithuanian left wing and initially the tide of victory tilted in their favor. The charge of Polish heavy cavalry helped Lithuanians to hold their positions. From that moment on, it was the Poles who held an initiative.