From Halopedia, the Halo wiki
2503 was a year in the 2500s in the 26th century.
- Admiral Harold Stanforth sends UNSC Transmission 08871D-00 to Captain Preston Cole, informing him that his second wife, Lyrenne Castilla, is a high ranking Insurrectionist leader. Cole is given three hours to bring her in, but finds that she has already fled.
- Preston Cole writes to his brother Michael Cole, talking about how it was all true about Lyrenne Castilla being a high ranking Insurrectionist leader, and how she left a note that proved she was the captain of the Bellicose.
- Halo: Evolutions - The Impossible Life and the Possible Death of Preston J. Cole, section Section Five: The Outer Colony Insurgency: The Gorgon V. The Bellicose (2495-2504)
- Halo: The Essential Visual Guide, page 8 (Ellen Anders)
- Halo Encyclopedia (2022 edition), page 94
- Xbox.com - Jake Courage, About Jake Courage (Retrieved on Jul 9, 2008) [local archive] [external archive]