As a sergeant, Markus Kruber led the 8th Ostland Swordsmen to victory many times, inspiring confidence and loyalty in his men and forming a strong bond with them.
When he was the sole survivor of his unit's attack against a necromancer, Markus found himself a broken man.
He attempted to leave the army but was denied. Impressed with his skill, Witch Hunter Victor Saltzpyre persuaded Markus' superiors to let him leave and become an escort for Victor's Bright Wizard prisoner to Ubersreik, where Vermintide takes place.