Commanders...HQ's...Supply Question

[Big Ivan]

Update:

In CSME (Dan, if you have that game) it covers this well under the rules section for Combat Efficiency. Leaders actually increase the range by their command rating provided the HQ and the leader don't move. So a 3 rating leader would increase a battalion supply range from the normal 8 to 11.

As for JTCS I can still find no reference to this action but I'll keep looking.