How Agility and Strength work in game for infantry.

[Huscarlton Banks]

Each strength point increases HP by 1. Agility increases movement speed. Contrary to what the game manual apparently says, it does not increase attack speed.

This seems to be the case, from ingame testing.

In addition, each strength point adds 1/5 of a raw damage point on bows/melee/throwing but not crossbows after your base damage damage is multiplied by power strike, proficiency, and holding bonus.