Special Operations Officer
From Halopedia, the Halo wiki
A Special Operations Officer was subordinate to Special Operations Commander and possessed a fairly large amount of political and military authority, able to acquisition operations. As such, they were sufficiently high-ranked to have appointed "assistants".
The role of such individual was to directly lead a squad of Special Operations forces, similar to the role of the higher ranking Special Operations Commanders, but the troupe unit that Special Operations Officers commanded held fewer troops than the ones commanded by Special Operations Commanders.
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