Timeline

M71M80M90M100M110M120M130M140M150M160M170M180M190M200M210M220M230M240M250M261M270M280M290M3018M3135M3255M3342M3453M3551M3660M3763M3880M3997M4099M41419M42178

with a year no year (the millennium or century is known)

The Contrite Masons 4M70M80M90M100M110M120M130M140M150M160M170M180M190M200M210M220M230M240M250M260M270M280M290M300M310M320M330M340M350M360M371M380M390M400M413M420

To the dossier

  1. The Contrite Masons Own chapters Unstated Founding — a dated wave with no official number (ca. 314.M37)
  2. The Holding of Calder's Reach Campaigns 741.M41Enemy: Hive Fleet Sorrowmaw Duration: Seven months Outcome: Pyrrhic Imperial victory
  3. The Siege of Myre Deep Campaigns 744.M41Enemy: Hive Fleet Sorrowmaw Duration: Nine weeks Outcome: Victory; the Chapter's fall
  4. The Unwalling of Tessarin Campaigns 993.M41Enemy: Hive Fleet Sorrowmaw splinter Duration: Four months Outcome: Inconclusive