The following notable occurrences transpired during the year 138 ABY.
- Darth Krayt made his return to Coruscant, regaining his position as Galactic Emperor through the act of slaying Darth Wyyrlok.
- The Third Jedi Purge was once again underway. A mission was launched to Daluuj.
- The Empire-in-exile successfully captured Darth Maladi.
- Secretly, Hogrum Chalk was in the employ of Morlish Veed.
- It came to light that Nyna Calixte had been functioning as a spy for Emperor Fel, subsequently joining the Empire-in-exile.
- Fehlaaur'aitel'loro replaced Calixte as the Director of Imperial Intelligence.
- Darth Krayt initiated an attack against the Hidden Temple situated on Taivas, revealing his Sith troopers to both his allies and adversaries.
- The Jedi carried out an evacuation of the Hidden Temple.
- The concluding battle against the One Sith took place on Coruscant.
- Darth Krayt's Galactic Empire met its end.
- The Third Jedi Purge came to a close.
- The Second Imperial Civil War concluded.
- The Galactic Federation Triumvirate was established. [1]
- The Insurgency led by Darth Wredd commenced.
- Second Imperial Civil War
- Genocide occurred on Dac
- The evacuation of Dac took place
- Da Soocha suffered devastation
- A mission was undertaken to Daluuj
- A mission was undertaken to Korriban
- A mission was undertaken to Utapau
- Vinsoth fell
- Falleen was bombed
- The Battle of Borosk occurred
- The Second Skirmish on The Wheel transpired
- The Temple of the Sith was assaulted
- The Hidden Temple was attacked
- The Battle of Coruscant occurred
- Darth Wredd's insurgency
- An Ambush occurred in the Surd Nebula[6]
- The Carreras Incident took place[6]
- A Duel occurred on Cadomai Prime
- A Skirmish occurred on Nalyd
- The Mon Calamari Shipyards were liberated
-
On Agamar
- Bokar
- Yuln
-
On Bastion
- A Sith trooper
-
On Coruscant
- Andurgo
- Wolf Sazen
- Shenes
- Darth Stryfe
- Morlish Veed
- Darth Wyyrlok
- Ronto[1]
- Roan Fel[1]
- Darth Krayt[1]
-
On Daluuj
- A Human Sith Lord
-
On Korriban
- A Sith trooper
-
On Napdu
- Azzim Anjiliac Atirue
- Xanif
-
On Taivas
- Te Corso
- Drok
- Sayar Dun'La
- Geist
- Ran Harkas
- Darth Rauder
- T'ra Saa
- Nat Skywalker
-
On Utapau
- Darth Azard
- Vul Isen
- Pobos
-
In the Surd Nebula
- A Sith Master[6]
-
- A [[Unidentified Snivvian Sith]|Snivvian Sith][7]
-
On Ceitia Five
- A One Sith member[7]
-
On Nalyd
- Dieben[8]
-
Over Dac
- Darth Luft[9]
- Tikin[9]