specifics in Spear fighting combat

[Giannis K. Hoplite]

Yes,well trained armied learned how to act as a whole,with order,qiockly and without leaving gaps. In a phalanx formation knowing different tecniques of striking witht eh spear were worthless.Most probably you didn't have the space to do anything fancy and after all,opposing another phalanx,you always had many targets available in front of you.
Alexander Polemos(by the way you'll need to put your real name in your signature) made a really valid comment.The neck would be a very usual vulnerable target,and after this,what we most usually seen in vases is upper thigh wounds. After all,the purpose was to bring the oponent down.Once he was there he was either useless or could be counted as dead,leaving a gap in the enemy line.
Khaire
Giannis