Complex sentence: When twilight came, Carson ordered a group of his scouts to burn the lodges of the first village, which also resulted in the death of the Kiowa-Apache chief, Iron Shirt, when he refused to leave his tepee.
Split into simpler sentences: When twilight came, Carson ordered part of his scouts to burn the lodges of the first village. The Kiowa-Apache chief, Iron Shirt, was killed when he refused to leave his tepee.