You are using the acronym GOMAR....I am assuming you are referring to "general officer
memorandum of reprimand" or GOMOR.
I am sorry to have to bear bad news. What you describe is not inappropriate.
A GOMOR is an administrative action. It is a reprimand...not more, no less. There is no statute of limitations on issuing one...nor is it prohibited that a subsequent commander/command can issue one.Army
Regulation 600-37 (Unfavorable Information), provides that an administrative memorandum of reprimand may be issued by an individual's commander, by superiors in the chain of command, and by any general officer or officer exercising general court-martial jurisdiction over the Soldier.
Now...this same regulation provides a method to appeal the GOMOR.
Once a LOR is filed in the OMPF, it is presumed to be administratively correct. Thereafter, the burden of proof rests with the soldier to provide evidence of a clear and convincing nature that the allegations are untrue or unjust, in whole or in part, thereby warranting removal.
Appeals should be in military memorandum format and accompanied by relevant, substantive evidence. Appeals should be sent directly to the President, DA, Suitability Evaluation Board, HQDA (DAPE-MPC-E), Washington, DC,NNN-NN-NNNN
Let me know if you have more questions...happy to assist if I can