Unoccupied Hostile Territories

[DynamiteChicken]

In Axis and Allies can a unit take an unoccupied hostile territory? Also can any unit (except naval units obviously) take over those territories, such as a plane?
Another question, when you are attacking or defending with a sub can you submerge before any combat takes place or do you have to wait till you can roll to submerge?

[Dylan the Canadian]

Only land units can take any territory (infantry, artillery, and tank) and yes you can take empty territory, you can also blitz if the situations right.

I do not know about the submerge though sorry

[Concealer]

For the sub, whenever you would roll the dice for your subs you can elect to submerge instead of roll. So if there i no destroyer attacking you can then, as a defending sub, do a surprise attack and roll the dice- or submerge. Basically, if you want to submerge you can do it before the battle starts. UNLESS a destroyer is there.