This story is collected in:

X-Wing Rogue Squadron Omnibus: Volume 3

Comic Book series published December 1997 thru February 1998 as X-Wing Rogue Squadron #25, 26 & 27 by Dark Horse Comics:

Synopsis:
This book collects together the following comic stories:

• The Making of Baron Fel
  Shot down from the bloody skies of Brentaal, Baron Soontir Fel has been captured by the Rebel Alliance. But from the shadowed recesses of a Rebel interrogation chamber, The Empire's greatest fighter ace tells a story of the deception and corruption beneath the Empire's orderly surface and sets the stage for his own defection to the Alliance!

• Family Ties
  Wedge Antilles has some news that his fellow Rogues are not going to like. If they were hesitant to fly against Baron Fel, the Empire's greatest fighter ace, how are they going to feel if they have to fly with him?
  Corellia may have somehow managed to avoid the devastating war between the Empire and the Rebel Alliance, but the back streets of Coronet City have their own brand of villains, and Rogue Squadron can be as heroic on the ground as they are in the sky!

Synopsis taken from Dark Horse Comics, www.darkhorse.com.

Related Stories (in chronological order):

• Rogue Squadron 1/2 by Michael A. Stackpole et al.
• A New Hope
• The Empire Strikes Back
• Return of the Jedi
• The Truce at Bakura
• Lucky by Rob Williams et al.
• Rogue Leader by Haden Blackman et al.
• Rogue Squadron Special by Ryder Wyndham et al.
• The Rebel Opposition by Michael A. Stackpole et al.
• The Phantom Affair by Michael A. Stackpole et al.
• Battleground Tatooine by Michael A. Stackpole et al.
• The Warrior Princess by Michael A. Stackpole et al.
• Requiem for a Rogue by Michael A. Stackpole et al.
• In the Empire's Service by Michael A. Stackpole et al.
• The Making of Baron Fel
• Family Ties
• Masquerade by Michael A. Stackpole et al.
• Mandatory Retirement by Michael A. Stackpole et al.

The following novels are sequels to the above stories, and are set from 6 years after the Battle of Yavin during the period of The New Republic, in chronological order:

• Rogue Squadron by Michael A. Stackpole
• Wedge's Gamble by Michael A. Stackpole
• The Krytos Trap by Michael A. Stackpole
• The Bacta War by Michael A. Stackpole
• Wraith Squadron by Aaron Allston
• Iron Fist by Aaron Allston
• Solo Command by Aaron Allston
• Isard's Revenge by Michael A. Stackpole
• Starfighters of Adumar by Aaron Allston