Complex sentence: Chief Joseph is widely credited with leading the Nez Perce on this journey, but he functioned more like a camp supervisor and guardian who was entrusted with handling the logistics of camp and travel and taking care of the women and children.
Split into simpler sentences: Chief Joseph is widely credited with leading the Nez Perce on this journey. He served as a camp supervisor and guardian, who was entrusted with handling the logistics of camp and travel, and taking care of the women and children.