@NDfan:
How do you capture a territory that is open and belongs to a hostile territory? You can’t do it doing during the Non-Combat Movement Phase, so is the only way to do it by blitzing?
Pag. 11 - Phase 2: Combat Move
Movement into a hostile territory counts as a combat movement whether the space is occupied or not
Thus if you want to capture an empty territory you need to move units there during combat movement.
Pag. 18 - Step 7 Conclude Combat
if you win a combat as the attacker in a territory and have one or more surviving land units, you take control of it
Since the defender has no units, you skip combat and take control of the territory at the end of the combat phase.
And you can also capture empty territories by blitzing armor through them during combat move (pag 13), as mentioned. The armor can afterwards continue its movement to attack a 2nd hostile territory, remain on the territory, or move its remaining move during non-combat to a friendly territory.