

The war was incredibly costly to both sides, with over twenty-three billion humans and billions of Covenant killed during the hostilities and further heavy casualties during the Flood plague. The official cessation of hostilities occurred on March 3, 2553. The conflict was closely connected with, and the cause of, the Covenant Civil War, both of which resulted in the final defeat of the Covenant Loyalists and Flood. The Humans would only win scattered and costly victories. Over the next few decades, the Covenant, with superior firepower, tactics (debatably), numbers and technology, overpowered humanity on hundreds of worlds, including heavily defended strongholds such as Reach. In order to keep the Covenant intact, war was declared against humanity. The war was instigated by the Covenant, whose Prophets discovered that humans were directly related to the Forerunners. Both additional factions proved to be invaluable to the efforts of humanity, as the information taken from Forerunner constructs and the Flood invasion of High Charity were helpful in splitting the Covenant apart in October of 2552. There were two additional factions of the conflict The Flood and a small number of surviving Forerunner constructs. The Human-Covenant War, also known as The Great War, was a major interstellar conflict pitting the Unified Earth Government and its United Nations Space Command against the Covenant Empire during the mid-26 th century between Februand March 3, 2553. He wars on death, for lives: not men, for flags." -" The Next War" We laughed, knowing better men would come, and greater wars:

Approximately 23 billion civilian and military casualties.Covenant Separatist Armed Forces (post- Great Schism).Special Operations Commander Rtas Vadumee (pre-Great Schism).Fleet Master Voro Nar 'Mantakree † (post- Great Schism).Ship Master Rtas 'Vadum (post- Great Schism).Arbiter Thel 'Vadam (post- Great Schism).Imperial Admiral Xytan 'Jar Wattinree† (post- Great Schism).Admiral Preston Cole† (MIA assumed KIA).HIGHCOM, Colonial Military Administration.Covenant Loyalists (After the Great Schism).Covenant Separatists (After the Great Schism).Many planets rendered lifeless and uninhabitable.Flood threat is believed to be neutralized.Both the Ark and Installation 04B are believed to be destroyed or heavily damaged.

UNSC Pyrrhic victory, Covenant Separatist victory The Orion Arm of the Milky Way Galaxy (except for the Battle of Installation 00, which took place outside of the Milky Way).

December 2552 /Ma(official end of hostilities.)
