In the Basic game Optional Rule (13.1.2), Line of Communication, it states that a unit may trace 1 hex to a road to begin it's LOC.
However I don't see that proviso in the Advanced game Line of Communication (19.2) rule. It states you must use motorized MPs for purposes of tracing an LOC. However Mountains (as well as Marshes during a storm) are prohibited from motorized movement.
With that in mind are units off roads in mountains during the Supply Phase of the Advanced game always considered out of supply? Or is Emergency Resupply the only way to provision them?
With the Rules as Written, yes. I wanted the the Standard Game rules to be slightly more lenient than the Advanced Game rules.