Frankly, this scenario is broken. If you do the math and use 6 steps of infantry plus one step of HMG, the ROKs can block the NK's from using the road by setting up infantry in the Board 92 town and then move one each to the woods/road hexes on Board 94. This works if the ROKs get initiative on turn 1 to disperse into the town. But even if they don't, they can keep infantry on the road behind the convoy to delay the tanks and allow the convoy to move out. even with the refugees hindering the ROK move, they can still get to safety.