Postby Cooper Braun » Sat May 24, 2008 11:38 am
Talhoffer's manual shows the throwing of the spears as the beginning moves in an armored judicial dual. One form of judicial duel at the time specified that each man might enter the lists with a dagger, a sword, and a spear (later the sword was replaced buy the poll axe). It was customary to throw the spear first and (hopefully) use it a a distraction to close with the opponent. Because duels were fought in full harness a thrown spear had little chance of doing serious damage (except against an open visor).
As for manuals with spear fighting in them, this is a bit of a hobby for me. Currently what I know of and posses are.
Talhoffer has a couple of plates on armored spear throwing.
Liechtenaurer and Ringeck have a section on armored spear vs spear, and armored sword vs spear.
Fiore has a full section on fighting with the spear (mostly vs spear, but a few others).
Paulus Hector Mair has a huge section on short staff and long staff (which are short and long spear as well), and is available in a wonderful book by two ARMA members, David Knight and Brian Hunt.
George Silver has a nice bit about staff fighting (his favorite weapon) that works equally well for spear.
So in answer to your final question, it depended on the circumstances. In a dual, throwing the spear was very very common.
As for soldiers on foot, well if (like the Romans) they were issued javelins, then certainly yes, as it was part of their battle tactics. Here we get into the difference between short and long spears (one and two handed respectively). If you have good swords and also have a javelin or short spear, the throw before the charge is quite common. But if you have a long spear or only a spear and shield, Your spear is your weapon and you would be silly to throw it away.