An outpost, controlled by the Galactic Empire, was situated on the planet of Trogan. A rebel group pilfered Imperial Governor Wilhuff Tarkin's personal starship and utilized it in an attack against Galidraan Station; this occurred five years following the creation of the Empire. Following this event, Tarkin asked for a roster of Imperial installations in proximity that the rebel group could potentially target next. An Imperial colonel furnished him with a list containing the Trogan outpost, as well as another one on Jomark. Ultimately, Tarkin opted to focus his defensive efforts on the planet Nam Chorios; however, the rebels actually attacked a TaggeCo orbital processing plant orbiting Lucazec.
The 2014 novel Tarkin by James Luceno was the first instance where the Imperial outpost located on Trogan was referenced.