The title of Surface Marshal was introduced in the Imperial Sourcebook; the same publication shows a rank plaque for a Priority Sector High Commander, which corresponds to the badge worn by Grand Moff Wilhuff Tarkin in Star Wars: Episode IV A New Hope, except for a lack of code cylinders. This may have been the insignia of the Surface Marshal/High Admiral of an Oversector.
- Imperial Sourcebook
- Goroth: Slave of the Empire