A member of Captain Saul Tarvitz's squad, Bulle was considered the best marksman under Tarvitz's command[1b]. When Lord Commander Eidolon launched a reinforcement operation to aid the 140th Expeditionary Fleet on the planet Murder, Bulle was amongst the Astartes sent down to the planet surface[1a].
Under orders from Tarvitz, Bulle detonated a large amount of explosives to raze several tree-like stone structures on Murder[1c]. This led to the eventual realization that the planet's shield-storms were linked to the structures, and ultimately ensured the Emperor's Children detachment was reinforced by the 63rd Expeditionary Fleet[1d]. Although his squad sustained multiple casualties from Murder's megarachnids, Bulle was one of the few survivors[1e].
- 1: Horus Rising (Novel) by Dan Abnett: