The Federation Council Military Adjutant was a post held by members of the Starfleet Operating Forces and served on the Federation Council. During the Four Years War, Admiral Bernhard Kovack served at this post. (FASA RPG module: The Four Years War)

An Adjutant is a person who, in the case of the army, assists a more senior officer. This suggests that the Military Adjutant maybe a Starfleet adviser who assists the Federation Council in military matters though this is speculation.
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