The Jorvik uprising

Jorvik- Umbria Prime-  Umbria prime was thought to be secure well behind Imperial lines during the Stygian Wars.  Thus it came as quite a shock to Imperial High command when the capital city of Jorvik suddenly erupted in an uprising.  The Uprising came suddenly led by Alpha Legion forces leading a number of cults in the city.  It was rumored that Icon of Insurrection was even raised during the initial uprising though that report has yet to be verified.