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Diego Garcia is a small tropical island in the Indian Ocean of Earth, about 1,000 miles south of the southern of coast India and Sri Lanka, and far east of the "African Horn".
The island has housed a military base since the 1970s. In 1941 RAF (British Royal Air Force) Gan was built near there and was shut down in 1976, to become Gan International Airport. In 1965, the Chagos Archipelago (a group of islands which include Diego Garcia) became a British Indian Ocean Territory and continued to be during the 21st Century.
Battle of EarthEdit
In the 26th century, the UNSC had a military base on the island. The base launched the first counterattacks against the Covenant when they invaded New Mombasa in Kenya, Africa in 2552 during Battle of Earth. Among the units to respond was the 77th Marine Regiment and the 405th Marine Infantry Division UNSC Marine Corps Unit. Later in the battle, a Covenant capital ship was sent in to destroy the base. It is unknown whether it succeeded in doing so.