Let me know more about pikemans

[Sarnaen]

Pikemen can attack well, if they're kept in formation. They get an irresistable charge bonus, IIRC, so should wreak havoc.
Use the Swiss armoured variety, and line up on a cavalry unit that's already engaged. Charge them from point blank and enjoy.

[Sociopsychoactive]

Pikemen are a little bit of a mystery to me as rarely let the game go on long enough to see them, but they have advantages. THey are akin to spearmen in that they get good bonusses against cavalry, but unlike spearmen the onus goes mostly to attack, and they have a higer attack rating aswell, but a lower defence rating. They are better than spearmen at killing cavalry, and slightly, only slightly, worst at pinning.

Using pikes rather than spears will result in more casualties to both sides so I tend to use them as I would axemen, hit the back or flank of cav or armoured units with them when the unit is pinned.