In 1764, he became a Colonel and Counselor in the new Polish–Lithuanian Commonwealth. He was also elected to the Convocation Sejm, representing the Księstwo żmudzkie, and was an Elector for Stanisław August Poniatowski. That same year, his troops raided the Radziwiłł palace complex in Biała Podlaska. His actions led to his being named a general officer in the Order of Saint Stanislaus.