The Last Command Sourcebook enables a gamemaster to design a d6 System adventure that will reveal the final secrets from the Timothy Zahn novel of the same name.

The book is divided into twelve chapters: WEG acquired the license to create a role-playing game based on the Star Wars franchise in 1987, and published Star Wars: The Roleplaying Game, which used the d6 System rules.

The Last Command, a 144-page hardcover book, was written by Eric Trautmann, with cover art by Tom Jung, and interior illustrations by Stephen Crane, Paul Daly, Tim Eldred, Allen Nunis, Terry Pavlet, David A. Plunkett, Dan Schaefer, Brian Schomburg, and Michael Vilardi.

In Issue 210 of Dragon (October 1994), Rick Swan noted that this supplement measured up to quality of the first two in the series.

Swan especially liked the "impressive" graphics that included "a blueprint of the Golan Space Defense Station and a schematic of Mount Tantiss."