I would like to ask when I should determine if a unit is out of supply in the standard game, but using the optional rules 13.0. Does it simply mean that a unit can become Out of Supply every time its Line of Communication is cut of, whether enemy movement, advance after combat etc.?
In the advanced game, the question is if only HQs check if they are supplied during the Supply Phase, while the other units can become Out of Supply in every other moment of the game, or I misunderstood sth.?
In the Standard Game, check supply between the Weather Phase and Initiative Phase.
In all cases, units are only ever judged out of (or in) supply during the Supply Phase.