Thus, the modifiers of the commander + terrain + random dice rolls + etc… will determine the outcome of the battle. If you have 1000 levies vs 1000 levies that will be 10k damage and toughness vs 10k damage and toughness. Simply put, you these stats are added together for each individual soldier to create the battle. Think of it as a separate toughness modifier only used when retreating. Simply put, it decreases the amount of damage a soldier can take when they are retreating. This is damage but for the retreating phase, when the battle is over the pursuit stat is added on top of the damage to deal more damage to retreating enemies. The basic defence stat, when toughness reaches 0 for a unit they are dead. The basic attack stat, attack modified by various factors such as terrain and commander ability then the damage is dealt against the enemies toughness.
