Thank you for your question today, I look forward to assisting you. I have nearly 20 years of legal experience in various disciplines, including JAG.
It really depends on what definition you are using. In terms of Military Justice, NJP is not generally considered in that category. It is an administrative tool, like discharge
processes, letters of reprimand, and evaluations, that are used by commanders.
Unlike actually Military Justice, no rules of evidence, criminal procedure or burdens of proof apply to NJP. So, in that sense, NJP is not specifically military justice.
That being said, NJP is what I would call the global military justice system, in that is is meant to deal with disciplinary matters, but at an administrative level. Additionally, to the extent that you are referring to the memo about command influence, NJP is one of those things that should not be subject to NJP. A higher level commander can not force a lower level commander to issue an NJP.