Two forces hostile to one another (A1 and B1) co-exist in a region (1), both on defensive posture. One force (A1) wants to move into an adjacent region (2), then attack another hostile force (B2) there. Can it do so by plotting a move and simultaneously changing to offensive posture? Or will that make it attack the hostile force in the region of origin (A1), rather than in the target region (A2)? So that to achieve its goal it would have to move off while being in defensive posture, then change into offensive posture next turn?
If so, should there be something like a "delayed" change of posture? A combined "move first, then change to attack" order?
Thanks!