For all you guys who debate about unit types and how they fight historically - if you want concrete combat exapmles buy a book called The Art of War, not to be confused with Sun Tzu's Art of War. This Art of War deals with the Medieval time period and seems to be the definitive book on Medieval troop types from all sorts of nations. I havnt bought it yet but it certainly seems like the source book if you guys are looking for oodles of information about Medieval troop types.