Nick Kyme
Stratagem

After returning from Calth and the Underworld War, Sergeant Aeonid Thiel is summoned before his primarch Roboute Guilliman.
The Horus Heresy
short

Also in:
Imperium Secundus
Eye of Terra
Echoes of Imperium
Calth: Audio Collection
Legions Divided Quick Read Collection
The Horus Heresy Audio Drama Bundle 2015