When Nero was testing his new Devil Breakers by killing demons, Nico took care of Soldier and learned from him that the entire city had been taken over by demons. Soldier himself was almost killed, but he was saved when Nero and Nico interceded. By 05:02 am, his squad was utterly destroyed.
On June 15th at 04:24 am, Soldier was part of a squad defending a checkpoint on the bridge into Red Grave City from a constant onslaught of Empusa.