From Warhammer 40k - Lexicanum
Kohl was a Veteran Sergeant of the Dark Angels active during the Great Crusade.
At over 200 years old, Kohl was the oldest surviving member of the Dark Angels by the start of the Horus Heresy and one of the last recruits drawn from Terra over Caliban. He fought in the very first battles of the Great Crusade.
- 1: Fallen Angels (Novel), Chapter 1