Note, defending the Straight means the defending sets up all his units first, The attacker then decides which edge to come in on and gets his choice of flanking edge (arrives 2nd turn), No Advance units, no local air (unless you have a base). Attacker entry is per campaign entry rules, place on the edge and then move. Surprise attack--The attacker gets to activate two Squadrons in his first activation. The attacker moves first.
defender gets one Bunker complex in one straight and two towers (any kind) in the other) They must be placed in the middle zone, face into the straight and LOS across the straight cannot be blocked by terrain