Imperial callsigns were designations used to address certain starships in the Imperial Navy. These call signs were typically names to induce fear, or directly related to the Tionese alphabet.
A starfighter pilot briefing, featuring Assault Gunboat Tau and Interdictor Red Claw.
Many Capital Ships in the Imperial Navy had names associated with conquest or subjugation. Examples of this fact are Lord Vader's Super-class Star Destroyer the Executor, Imperial-class Star Destroyer Devastator responsible for the capture of Tantive IV, and Imperial-class Star Destroyer Tyrant a picket ship among Death Squadron at the Battle of Hoth. While this practice was popular among flagships, it was not the standard across the entire Navy.
Imperial starfighters had a more complex naming system than that of larger vessels. Standard starfighter Flight groups typically received designations derived from the Tionese alphabet, often depending on class of mission role. This practice however was not standard among specialized squadrons such as Darth Vader's Black Squadron.
Space Superiority fighters typically held designations , Gamma, and . However if the necessities of battle dictated, designators Zeta, Eta, , and Iota were used. At times Interceptor starcraft shared letter with the bomber role brethren.
Imperial TIE/sa bombers were often designated as Flight group Beta. However due to mission requirements bombing craft also shared designations Alpha, Gamma, and Delta among others of their interceptor brethren, this was typically the result of the necessities of warfare, or the precedent of bombing craft entering the system.
Assault Craft such as the Assault Gunboat held callsigns like Tau, Mu, and Nu. Occasionally Gunboat Pilots received the designation Rho, Psi, and Epsilon. While not strictly an assault craft, Missile Boats also received the designations Tau and Mu.
A flight briefing featuring Missile Boat group Tau, TIE Avengers Delta and Assault Transport Omega.
Imperial Transports such as the Delta-class DX-9 stormtrooper transport, and the Gamma-class ATR-6 assault transport often received designators Epsilon, Upsilon, Sigma, Omicron, and . Imperial Lambda-class shuttles often received as a logical designation, but also shared Epsilon, Upsilon, and Sigma with other transports.Other shuttle names included Tyderium, Toten, and G'nabgib, along with transports Zack 1, Soryi, and Runner.
Imperial Naval logistics required entire fleets of utility craft and cargo containers. These craft too received various designations, many of which were derived from the alternate alphabet. Cargo containers such as the Class-A cargo container received designators such as Pi, Chi, Xi, and THX-1138. Starcraft such as Cargo ferries and Heavy Lifters were given designators like Upsilon and Sigma, along with names like Mule 1.
- Black Squadron
- Death Squadron
- Saber Squadron
- Obsidian Squadron
- Onyx Squadron
- Scimitar Squadron
- Scythe Squadron
- Shadow Squadron
- Talon Squadron (Galactic Empire)
- X-Wing: The Official Strategy Guide
- TIE Fighter: The Official Strategy Guide