The unit's baptism by fire occurred at the Battle of Miechów, where under the command of adjutant Wojciech Komorowski, they successfully charged Russian forces defending the local cemetery. However, the overall engagement was a defeat for the Poles on February 17, 1863. Lt. Tytus O'Brien de Lacy escaped with 400 zouaves to Galicia in March 1863. In the Battle of Chroberz the Zouaves covered the retreat of the main body of Polish forces under Marian Langiewicz. They also fought at the follow-up Battle of Grochowiska where they captured Russian artillery positions but suffered very high casualties.