Shadow Purges

The Shadow Purges was the first notable engagement recorded in the history of the 21st 'Cursed' Founding Midnight Claws Space Marine Chapter. Not long after their inception, they were dispatched by their Adeptus Mechanicus creators to test the newly created Chapter against the treacherous Alpha Legion Traitor Legion. It was during this war to seek out and hunt down the Heretic Astartes that the Midnight Claws gained their infamous reputation for striking swiftly, and then just as quickly, fading back into the shadows.

History
Soon after the chapter was made it was tasked by the forces of the Mechanicus to start a campaign of covert actions against cells of Alpha Legionnaires that were infiltrating various Loyalist Space Marine Chapters and weeding out the loyalist marines from inside, replacing their ranks with traitors instead. Before undertaking this mission however, the new Chapter had to first find the loyalists and then separate them from the others. The campaign ended with the Chapter gaining infamy across several systems for their nature of bringing judgement from the shadows.