Complex sentence: The Americans were as out of touch with Rogers as he was with them, looking upon him as the noted ranger leader and expecting him to behave as one; they were at a total loss to explain his drunken and licentious behavior.
Split into simpler sentences: The Americans were as out of touch with Rogers as he was with them. Looking upon him as the noted ranger leader, and expecting him to behave as one, they were at a total loss to explain his drunken and licentious behavior.