What term is used for a senior-subordinate relationship that is prejudicial to good order and discipline?

The term used for a senior-subordinate relationship that is prejudicial to good order and discipline is "fraternization." In military environments, fraternization refers to inappropriate relationships between ranks or positions that can undermine the hierarchy and authority structures vital to maintaining order and discipline within a unit. Such relationships can create conflicts of interest, perceptions of favoritism, and impacts on morale, leading to an environment that is not conducive to effective command and control.

Fraternization is specifically addressed in military regulations because it can disrupt the professional nature of the senior-subordinate relationship. Maintaining clear boundaries helps ensure that all personnel respect the chain of command and that decisions are made fairly and without bias. While the other terms may relate to ethical breaches or negative relationships, they do not specifically capture the context of a problematic senior-subordinate dynamic like fraternization does.