Darth Vader and the Lost Command Series by W. Haden Blackman

Still haunted by the events in Revenge of the Sith, Darth Vader must set aside his past and put his future on hold for a mission to the mysterious Ghost Nebula. His goal is to locate--and if possible, rescue--a missing Imperial expeditionary force... moreStill haunted by the events in Revenge of the Sith, Darth Vader must set aside his past and put his future on hold for a mission to the mysterious Ghost Nebula. His goal is to locate--and if possible, rescue--a missing Imperial expeditionary force. But what seems a perfect opportunity to lose himself in his duty is complicated by two factors: he is paired with a willful yet highly competent co-commander, and the officer they are being sent to locate is the son of Vaders rising nemesis, Moff Tarkin. less