Quote Originally Posted by Maion Maroneios
Exactly my thought. I have read though, that Roman soldiers deployed a certain tactic against Makedonian phalangites, where they ducked under the pikes and crawled until they got under the phalangite's noses. Pretty nifty, I would say, though I think well trained or experienced phalangites could deal with this some way...
In Late Middle Age they developed the great two handed swords as a good way to fight the pike unities, and make a breach in the pike wood.

A two meter sword (very rare indeed) has that purpose, break the pikes, not to fight as we seen in movies (like Mel Gibson as William Wallace style).