Quote: (Man of kent @ Jan. 19 2010, 08:55 )
A: If the attacking force contains a war engine (remember that WE's can't be concealed!) the the defender is able to act normally as soon as the game begins (though all actions MUST bring a formation onto a table when it activates).  In this case it is reasonable, for example, for the defender to take an action and then immediately pass the turn to the attacker pass on revealing a concealment marker or take an action with the WE.  Concealment markers that have passed on revealing themeselves may still reveal and fire overwatch once all the defenders have moved as described in the turn 1 special rules.
While
MoK's rulings definitely stand for Winter Warmer, here's a couple of my thoughts:
Technically, the Attacker could deploy War Engines out of line of sight from the road and the ambush wouldn't be "revealed" until a Defender came into line of sight of it; at least that's the intent.
Also realize that, despite having to make "Road Marches", for their initial moves, there's nothing that requires the Defender to move their full distance each move.
Quote:
2. Can aircraft spot concealed formations.
A: No.
Again, aircraft can be used to spot concealed formations, but, in the updated Concealment rules suffer a -1, in addition to any other modifiers, to make spotting checks.
If the Defender does have aircraft, it's a strong incentive for the Attacker to choose the defender contingent that has no aircraft as their ambush target... and encourages the Defender to split up their air power between contingents.
More to come.