Before this patch added crush armor as forge techs. I thought it was better to rework and make technologies more objective.
Currently we had 4 technologies, two for infantry and two for cavalry. All give armor against pierce and hack, apparently wrong reasons, crush is out.
What the patch does is divide the technologies into pierce + crush for one type and hack armor for another, Both affecting cavalry, infantry and elephant.
That way the player is free to choose the best type of technology for the moment.
Value of hack armor is less than pierce and crush as it protects against only one type of damage.
Values must certainly be discussed.
Icons according to the description.
I plan to individualize the attack too on sword, spear/pike, archer, etc.