In late June 1660, after the
Treaty of Oliva, a Lithuanian army commanded by Paweł Jan Sapieha attacked Russians, who occupied most of the territory of the
Grand Duchy of Lithuania. The Lithuanians were supported by Polish units under Stefan Czarniecki, and their target was to end the siege of Lachowicze. Polish - Lithuanian units, which altogether had 13,000 men and 2 cannons, set off from
Słonim. Facing them was a Russian army under
Ivan Andreyevich Khovansky (Tararui), who had unknown number of soldiers (some estimates claim 24,000; while some claim only 8,500). On the morning of 28 June Polish front units, marching towards
Baranowicze, crossed the Połonka river, east of the town of Połonka. Here, Poles encountered a Russian unit, and a skirmish began. When main Russian forces arrived, the Poles withdrew behind the river, and Polish - Lithuanian army began preparations for the battle. Poles were placed on the right flank, Lithuanians on the left, while central front was protected by mixed, Polish-Lithuanian units, together with artillery. ==Battle==