Originally Posted by Knight of the Rose
Well, more on topic: The ability to take damage is in the domain of spears, the ability to give damage on hvy. cav. and certain shock-troops (Ghazi, Vangarians ect ect.) Halbs are even more of a direct compeditor to swords as they are excellent melee units that even get a bonus against cav.
Why do you need swords who can do a little of everything? Because in many situations you'll need the ability to adapt to the situation on the battlefield as it develops. Swordsmen will persevere in most situations, and can act more independently as they have much better morale than halbs and often elite status. So in some ways it is a 'hybrid' unit. These 'invicible' abilities makes the swordsmen quite adept in my eyes, and often well worth the florins