Montgisard
Montgisard was a chapter keep of the Black Templars, located on the Imperial world Stygia XII.[1]
The keep was constructed some four thousand years before M41, before the existence of any permanent human settlement on Stygia XII, on the order of Marshal Gervhart to act as a base from which to conduct the Athelor Crusade. After thousands of years of faithful service, the keep was abandoned by the Chapter, having fulfilled its purpose.[1]
Some time later, the Imperium officially settled Stygia XII. There were no records of the Black Templars outpost, which was still standing when the first settlers arrived and as a result, the structure was the source of superstition. Many of the native populace believed that the structure, which they knew as Stormhelm, was haunted and some even thought that the keep was of xenos origin.[1]
In 832.M41, a Chaos Cult led an uprising on Stygia XII and used "Stormhelm" as their base of operations. Inquisitor Abraham Vinculus of the Ordo Hereticus discovered that the cultists possessed four corrupted items of great power known as Necrolectifiers and planned to use them to open a warp gate. Vinculus sent his acolyte, Interrogator Edwin Savaul, along with Inquisitorial Storm Troopers and Battle Sisters of the Order of the Bloody Rose to stop the cult before they could enact their ritual. At around the same time, High Marshal Ludoldus sent a task force of Sword Brethren led by Castellan Marius Reinhart to reclaim the keep, hoping to use a Dreadnought sarcophagus to preserve the life of veteran Sword Brother Ezekial Yesod, whose knowledge was judged vital to the Templars' ongoing crusade. Working, not exactly together but certainly in parallel, the Imperials purged the cult, reclaimed the keep and successfully interred Ezekial.[1]
Trivia
Montgisard is the place (today located in Israel) where in 1177 one of the most notable battles of the Crusades took place, the Battle of Montgisard between the Kingdom of Jerusalem under Baldwin IV and the Ayyubids under Saladin.