Complex sentence: He received awards commemorating both his role as an actor and as a soldier; in 1957 was the first black actor to win a best actor award at the Cannes Film Festival for his role in the Yugoslavian (Slovenian) film "Valley of Peace".
Split into simpler sentences: He received awards commemorating both his role as an actor and as a soldier. In 1957, he was the first black actor to win a best actor award at the Cannes Film Festival for his role in the Yugoslavian (Slovenian) film "Valley of Peace".