Complex sentence: The company found the people in Galena demoralized and was ordered to return to Dixon's Ferry on June 11, the group made camp at the same campsites it used on its march toward Galena.
Split into simpler sentences: The company found the people in Galena demoralized and was ordered to return to Dixon's Ferry on June 11. On the march back, the group made camp at the same campsites it used on its march toward Galena.