Castagor Thurlmann
Castagor Thurlmann was the Fleet Primus Commander of the Iron Hands Legion, during the Great Crusade and was well known for developing a fleet approach pattern called the Thurlmann Magnetopause. Normally a world's polar magnetosphere interferes with the arrays of orbital surveyors and augury stations, making the poles a blind spot for those on the surface, as well as any ships in orbit. Through using the Thurlmann Magnetopause however, a single or group of ships could hit the boundary of a world's polar magnetosphere in such a way, that the ships' void shields and navigational fields would effectively negate the blind spot the magnetosphere normally produces. If effectively done, the Thurlmann Magnetopause would allow these ships to freely fire upon a world, without worry of any of its surface based defenses being able to target them in return, for at least several minutes. Though the Thurlmann Magnetopause was taught to other Space Marine Legions, by the time of late M41 it had been forgotten by the Imperium and only the traitors who survived the Horus Heresy still used the technique.[1]
Sources
- 1: Master of Sanctity (Novel), Part 3 - Warmonger
