A T-series tactical droid functioned as a droid made to serve the Confederacy of Independent Systems's Navy. It met its end in the Battle of Umbara.
Around 21 BBY during the Clone Wars, this T-series tactical droid was in command of a Separatist supply vessel during the Battle of Umbara. The vessel was providing supplies to the Umbarans, which caused difficulties for the Republic. The tactical droid was eliminated alongside the supply ship when clone troopers took control of Umbaran starfighters, flew them into the ship's hangar bay, and detonated the primary reactor.