Do you charge with spear men or hold the position?

[Goalum]

Considering the fact that charge is higher than defense which one do you use in your battle?

One thing you can do with spears[and pikes], is to charge them after getting them out of "hold formation" - if you charge them while on formation very few men of the unit will actually attack the enemy unit [as drone says] with the [huge] charge bonus.. while out of the "hold formation" all men in the unit will attack [it will be like any other unit charging, like cavs or swords] with the charge bonus..

This makes spears especially handy to use as a hammer unit to other pinned units [in the later stages of a battle - NOT when battle lines are locking - there holding formation and getting the ranks bonus is better.. and spears better used as pinning/hold the line units] especially against pinned cavalry, as together with the bonus charge your spear unit will get the anti-cav bonus too..

its also handy against other unit types that are about/near_about to break due to the large charge bonus [again in the later stages of a battle or when the spear unit is extra on your part and wont be stopped]..