During the war, Derel served on the Leveler, as a principal warfare officer, alongside Captain Gilad Pellaeon. The Captain noted that he wished all the posts on his bridge were by troopers such as Derel.
Derel participated in the Battle of JanFathal aboard the Leveler, alongside Pellaeon. During the battle, they rescued Republic Spy Hallena Davis. He most likely also participated during the battles of Merson and Gaftikar.
- The Clone Wars: No Prisoners
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Clone Troopers in the Databank (backup link)
- ↑ 2.0 2.1 Regulation 4, Clone Trooper Birth Date
- ↑ 3.0 3.1 The Clone Wars: No Prisoners
- ↑ Republic 64: Bloodlines
- ↑ Republic Commando: True Colors
- ↑ Derel served as the principal warfare officer, which means that he most likely was aboard the ship in both battles, as he held a chief position among the crew.