Complex sentence: Wojciech Kossak was very different in subjects and style from Jan Matejko, and belonged to a later generation of artists, however like Matejko he is best known for works depicting the history of the Polish Army, and notable battles of Central and Eastern Europe.
Split into simpler sentences: Wojciech Kossak was very different in subject matter and style from Jan Matejko, and belonged to a later generation of artists. Like Matejko, however, he is known for works depicting the history of Polish arms and notable battles of Central and Eastern Europe.