Tactical commander was a military rank used by the Nikardun Destiny hegemony, which was led by General Yiv. Those who held the rank could know what Yiv's plans were. Around 19 BBY, Pathfinder navigator Qilori, one of Yiv's agents, asked the general how he planned to capture the Chiss Senior Captain Thrawn. Yiv then asked Qilori if he had been promoted to the rank of tactical commander, prompting the navigator to apologize.
The rank was mentioned in the 2020 novel Thrawn Ascendancy: Chaos Rising, the first book in Timothy Zahn's The Ascendancy Trilogy.
The rank was mentioned in the 2020 novel Thrawn Ascendancy: Chaos Rising, the first book in Timothy Zahn's The Ascendancy Trilogy.