The UNSC Ironside (C-167), formerly the CMA Ironside, was a Halcyon-class light cruiser in service to the Colonial Military Administration then the United Nations Space Command during the Human-Covenant War. It famously served as the flagship of Rear Admiral George Elliot for much of his war-time career. The ship and its commander both became legends in the Outer Colonies, participating in dozens of battles against the Covenant and saving millions of colonists from being glassed. It survived impossible odds until it was finally destroyed in 2531.