I have yet to play the game in 3ed, just reading the new rules and one point is not clear to me. The 3ed rules state: Units can move over Obstacles normally (even ending their move on top of them), but they cannot cross them while moving At the Double.
Question: Where the unit moving at the double stops when encountering an obstacle. Does it really stop over the obstacle (if it reached the maximum distance 2xSp) or at the point when the back side of the unit reaches the obstacle. One may even argue that the unit would stop at the point when the back facing is about to leave the obstacle as in all these cases the unit does not cross (fully) the obstacle. Is it really intended this way or the unit ends its movement as soon as the front facing reaches the obstacle (as it is/was in the 2nd edition).