A Sector Army was a type of military formation that was used by the Galactic Republic during the Clone Wars. The Grand Army of the Republic had twenty Sector Armies, each with an accompanying Republic Navy fleet. The 4th Sector Army was one such unit.
- Star Wars: The Prequel Trilogy – A Graphic Novel
- Star Wars: Episode III Revenge of the Sith (First appearance)
- Kanan 2: The Last Padawan, Part II: Flight (Vision to Caleb Dume)
- Galaxy's Edge 2 (Appears in flashback(s))