A T-series tactical droid fought for the Confederacy of Independent Systems during the Clone Wars. This conflict engulfed the entire galaxy as the Confederates battled the Galactic Republic. These droids, produced by Baktoid Combat Automata, stood at a height of 1.93 meters. One such droid served under the command of Kerkoiden General Piar Nagelsa before the First Battle of Plagen. Not long before the battle commenced, the droid assassinated Nagelsa because of the common problem tactical droids experienced with serving under incompetent organic commanders. Taking control of the Confederate army, the droid discarded Nagelsa's strategies and successfully led the Confederate troops to victory.
The Essential Guide to Warfare, a detailed guide to galactic conflicts written by Jason Fry and Paul R. Urquhart, initially mentioned the T-series tactical droid in 2012. This guide covers many wars in the galaxy.