Great Crusade Chronology

Presented below is the Great Crusade Chronology, an exhaustive listing of all known campaigns that occurred during the nearly two centuries-long Great Crusade that began in 798.M30 and ended with the outbreak of the galaxy-wide Horus Heresy in the early years of the 31st Millennium. At its height, the great expansion of the Imperium of Man consisted of 4,287 primary Expedition Fleets engaged upon the business of enforcing Imperial Compliance and extending the Imperial aegis across the galaxy, as well as 60,000+ secondary deployment groups involved in regulating Compliance or Imperial occupations. By no means is this list complete, as much of the information presented in various canon sources is often ambiguous and even, at times, contradictory. Therefore, this is merely a rough guide to the chronological order of the events, as they occurred, during this conflict.

Chronology
Presented below, is a chronological listing of events of the Great Crusade. The following information was compiled by manifold and diverse hands at the order of Emperor and the Acting Council of Terra. Many of the dates listed in this chronological compilation are approximations as Imperial records from this time are too fragmentary to be wholly reliable. As more information is uncovered in newly discovered Imperial records, it will be added to the chronology: