Royal Army: Rebel Army: The Battle of Mątwy (Polish: Bitwa pod Mątwami) was the biggest and bloodiest battle of the so-called Lubomirski Rokosz, a rebellion against Polish King John II Casimir, initiated by a magnate and hetman, Jerzy Sebastian Lubomirski.

Lithuanian hetman Michał Kazimierz Pac however missed a chance to shatter rebel army, and decided to wait for Crown divisions.

Other from Pac's delay, royal leaders did not know exact positions of the rebels, thinking that their main units were located far from the ford.

Sobieski made a fatal mistake, placing the cavalry in front of the dragoons, as before the end of the battle, retreating cavalrymen trampled the foot soldiers.

The river ford was filled with equipment, men and their horses, so under the circumstances, Jan Kazimierz ordered a general retreat, abandoning those units which continued to fight.

Most of the victims were the most experienced and best military men of the two nations, including soldiers of Stefan Czarniecki, who had fought in Ukraine, Muscovy and Denmark.