Battle of Vannaheim
The Battle of Vannaheim was a battle of the Horus Heresy fought from 008-009.M31. The battle began when the Iron Warriors launched a daring assault on the orbital Hives of Vannaheim, capturing them after ten days of brutal fighting. A nearby force of loyalist Astartes including Space Wolves then launched three counter-attacks to reclaim the orbital hive stations. Each however failed and countless loyalist lives were lost. During the last, disastrous attempt, the Space Wolves Grand Cruiser Helicon Spear was captured by the Iron Warriors, becoming a prize for the traitor legion.