From Warhammer 40k - Lexicanum
Calloson became the Voted-Lieutenant of the Dark Angels Legion's Stormwing following the ending of the Ruinstorm during the Horus Heresy.
His long record of service to the Legion saw Calloson take part in the battles for Kalippa Major, Creusias, Strichnus and the boarding attack on the Night Lords Cruiser Vulturine. Each of these attacks left him heavily wounded and resulted in his body becoming heavily scarred and rebuilt with augmetics. Though Calloson was noted for having obvious deficiencies in character, his trenchant will to be the first to face any enemy and disdain for death, greatly endeared him to his Legion.
Calloson's name is lended his shield: the Shield of Calloson.
- 1: Dreadwing (Novella), Chapter 2
- 2: Codex Supplement: Dark Angels (9th Edition), pg 59