The unit had some 300 men, including 60 riflemen, 210 kosynierzy, and 30 cavalry.

With food supplies received in Zgierz, the insurgents marched to the forest near the village of Dobra, where they camped.

The Poles were immediately followed by a group of the Imperial Russian Army, which consisted on infantry and Cossacks.

Polish insurgents fought desperately, but facing supreme firepower of Russian soldiers, they eventually retreated.

Among the fallen Poles, was female insurgent Maria Piotrowiczowa.