In the chaos of the battlefield, it was sometimes hard to tell friend and foe apart, the enemy you were fighting could change at any time, every angle could potentially be exposed at any given time, which was why most livings were sticking together as closely as possible.
The biggest problem wasn't that every single undead was a threat that could end your life in a single, well-placed blow, or the sheer amount of enemies aiming to slay you, or even the ridiculous amount of diversity in the type of combatants one could encounter on the battlefield.
