What term describes unauthorized conduct that is abusive or humiliating towards another military member?

The term that describes unauthorized conduct that is abusive or humiliating towards another military member is hazing. Hazing specifically refers to acts that intentionally humiliate, intimidate, or put someone at risk for the purposes of initiation or prodding them into conformity within a group. In a military context, hazing is strictly prohibited as it undermines unit cohesion and morale, and it can create a hostile environment.

On the other hand, while bullying may share some similarities with hazing, it generally refers to repeated aggressive behavior that is intended to harm and does not necessarily involve initiation or group dynamics. Fraternization refers to inappropriate relationships between different ranks or groups, and neglect implies a failure to care for someone's needs, which does not necessarily involve direct abusive behavior. Hence, hazing is the most accurate term for unauthorized conduct that is abusive or humiliating in a military setting.