Complex sentence: Maus told the group that they were American soldiers and they would not return fire, he then turned back for camp when Captain Crawford ordered him to speak with the Mexicans again, to ensure a cease fire.
Split into simpler sentences: Maus told the group that they were American soldiers and they would not return fire. Maus then turned back for camp when Captain Crawford ordered him to speak with the Mexicans again, to ensure a cease fire.