Normally, all weapons may be used in any terrain. the exceptions are:

• Long Spear, Lance, Pike and Halberds (in MW) may only be used by a front rank while moving in any type of woods.
• If the unit is halted in the woods and not moving that turn, or if they move completely out of the woods during their charge/movement, they count normal ranks as fighting.

This allows some flexibility while still addressing my concerns re: moving in woods with pole weapons. If you elect to charge or advance out, you take your chances with trying to clear the terrain. If you make it, fine, if not, too bad! This also gives us a bit more edginess to ambushes. If they work, they can be devastating. If your unit fails to make it completely out of the woods, not so good.

Medieval Warfare Rules Clarifications

Part 1. Turning Units, Dropping Back Stands and Expanding Out
Part 2: Cavalry and Infantry Wedges in Medieval Warfare
Part 3: Pursuits -- Rules Change
Part 4: Mantlets -- Rules Change
Part 5: Skirmish Targets and Frenzied Skirmish Infantry
Part 6: Turn Initiative
Part 7: Weapons Use -- Rules Change
Part 8: Roman Order Version 5.0 -- Rules Change for AW