[1] On 6 April, Czarniecki's troops reached Zwoleń, where he learned of the retreat of Frederick of Baden, who had originally rushed to the aid of Karol Gustav, trapped in a camp at the forks of the San and Vistula.

Czarniecki immediately decided to give chase and, near Kozienice, struck at the Swedish artillery consisting of 240 raiders and dragoons under the command of Tornskjöld.

[2] On hearing that the rear guard had been defeated, the margrave hastened his retreat, and on the night of 6-7 April reached Warka, where he was joined by Ritter's troop, drawing from Radom with several hundred carts full of the spoils of war.

In the meantime, Czarniecki was joined in Kozienice by Jerzy Lubomirski and at night his troops set off for Warka, where they arrived at dawn on 7 April.

Thinking they were dealing with some sort of party, the Swedes put up an open front, and two hours later there was not a living soul left who could run up to the Margrave and shout that it was Czarniecki.