Did Custer disobey orders at the Battle of the Little Big Horn?

The point under consideration here is the thinly veiled charge in General Terry's confidential dispatch of July 2 that Custer disobeyed his orders by resorting to forced marches and in following the Indian trail across the Divide as soon as he came to it, and as a result struck the Indian village on the 25th instead of the 26th of June, the day Gibbon was expected to reach the mouth of the Little Big Horn. But, as will appear, the charge could not be made to stick on the basis of the actual distances marched as shown by Lieutenant Wallace's record.