Changes

*'''994.[[M30]]''' — The [[Compliance of Isstvan III]]{{Fn|20a}}

[[Image:Corax-Soulforge-clean.jpg|thumb|right|295px|[[Corax]] leads the Raven Guard against the [[Dark Mechanicus]] during the Horus Heresy]]

The Raven Guard legion was one of the smallest legions during the [[Great Crusade]], numbering 80,000 Astartes as well as an [[Imperial Army]] [[Regiment]] known as the [[Therion Cohort]] attached to the Legion's expeditionary force.{{Fn|30a}} As a legion they were a fierce enemy for anyone who opposed the [[Imperium of Man]], using time honoured tactics of guerrilla warfare which Corax himself had learnt during the Revolution he himself had commanded to free his people from the merciless [[slavery]] forced upon them by the Tech Guilds of [[Kiavahr]].{{Fn|2}} Extremely efficient and well trained, the Raven Guard would engage in acts of mass sabotage along with infiltration, blink-of-an-eye strikes and expert covert operations, all of which they had perfected into what would look like ease to any other warrior.{{Fn|2}}