The Battlehunger is a psychological disorder amongst warriors and more commonly amongst Angels that increases the potential for violence within the subject. It is described as a paranoid blood thirst up to the point when the subject loses all rational behavior and rampages.
The first changes of a subject's behavior start with the increased readiness to kill. While soldiers in war are trained to be more prone to kill, this phenomenon is often ignored. As the thirst for killing increases, it is often observed that the subject is also more frantic and react more hostile towards provocations.