War-Mantle was one of the secret Imperial projects covered by the Tarkin Initiative. The technical schematics for War-Mantle were kept at the Citadel Tower on Scarif, along with those of the Death Star and Stellar Sphere.
- Rogue One: A Star Wars Story novelization (First mentioned)
- Star Wars: Rogue One: A Junior Novel (Mentioned only)
- Rogue One, Part VI (Mentioned only)