On March 15, 1656, Stefan Czarniecki's regiment was victorious over the advance guard of the Swedish army commanded by the Swedish king Charles X Gustav.The battle greatly changed the balance of forces, as a large part of the quartered troops that had been with the Swedes joined Czarniecki's division. The losses suffered in the battles on the San River convinced the Swedish king that he would not be able to establish an operational base for further operations here. Awareness of this fact

This prompted Charles Gustav to retreat along the San and Vistula Rivers. On March 15, 1656, Stefan Czarniecki's regiment was victorious over the advance guard of the Swedish army commanded by Swedish king Charles X Gustav.The battle greatly changed the balance of power, as a large part of the quartered troops that had been with the Swedes joined Czarniecki's division. The losses suffered in the battles on the San River convinced the Swedish king that he would not be able to establish an operational base for further operations here. Awareness of this fact prompted Charles Gustav to retreat along the San and Vistula Rivers. Soon the retreating Swedish army, together with its commander and king, was to find itself at the forks of both rivers, blocked by Crown and Lithuanian forces.