I have a US ARM and a CW HQ-ARM stacked together adjacent to an out-of-supply disorganized Axis MECH in a desert hex. Using the 2d10 table, neither one of the Allied units is powerful enough individually to overrun the MECH. (The ARM just misses: 7:1 = +14, +2 disorganization, +1 ARM attack, -2 MECH defense = 15.) Together, they can easily do it. However, MWiF does not let them move together, since they belong to different major powers. Am I correct that there is no way to do this in MWiF?
The overrun should be legal:
Apart from control of hexes, reorganization, reinforcement and activities limits, units which co-operate act as if they were from the same country (they may move and fight together, etc.).
(There should be a reference to Allied combat friction in that last rule, but that makes no difference.)
I thought I knew how to play this game....