
Originally Posted by
Teutonic Warlord
As has already been said by others, 2-handers are good for attacking the flanks. You need to have them avoid archer fire and cavalry charges because they will be decimated.
To properly use 2-handers, they (usually) need to be used in reserve and not in the front line. You can use them to flank after the lines make contact, but cavalry can fill this role just as well and usually better. If you are playing the dwarves, though, you will just have to make do with 2-handers. Another important role is to use 2-handers as elites killers. If you can have a shield unit make contact with an elite enemy unit (trolls, mumakil, nazgul, etc), you can send in the 2hers to perform heavy damage to that unit while minimizing casualties.
However, the best use of 2hers I have found is to use them to defend chokepoints, like settlement gates and bridges. Enemy archer fire will be ineffective, and the enemy can't use charges with cavalry or infantry. And, as has been said by someone else, 2hers will destroy cavalry in melee. In vanillla M2TW, I used 20 units of Zweihander to defend Antioch against 8 full Mongol armies. I ended up with only one full unit at the end, but all the Mongols were defeated.