Who was the name of the Polish calvary officer?

The name of the Polish cavalry officer is not specified in your question, as there were many notable officers in Polish history. One prominent figure is Colonel Kazimierz Sosnkowski, who played a significant role during World War II. Another famous officer is Major Władysław Anders, known for leading the Polish Army in the West. If you have a specific context or period in mind, please provide more details for a precise answer.