Hades Corps (Earth-5875)

Hades Corps was an unit of the UNSC Marine Corps of Engineers, specialized in demolition operations.

History
On July 20th, 2548, during the Battle of Algolis, Hades Corps, led by Sergeant "Ghost", were tasked with the destruction of the Office of Naval Intelligence's Weapons Research Facility T12A and its prototype suit of armor. When time ran short and the Hermes-class freighters that carried civilians started to be destroyed by the Covenant, the few survivors of Hades Corps became stuck on Algolis. However, with the sacrifice of Ghost, the survivors were able to escape from the planet when Ghost self-destructed the armor.