Carlingia
From Warhammer 40k - Lexicanum
Carlingia was a city of the planet Euesa which possessed a major space port.[1]
When the Euesan government declared their support for the Traitors in the Horus Heresy, the Imperial response force sent to retake the planet made taking Carlingia a priority. Space Marines of the Raven Guard Legion landed and quickly subdued the city, allowing their supporting Imperial Army units to land their forces.[1]