The history of the Gaian Defence Forces dates back to the Pre-Migration Era when it was known as the "Gaian Security Forces". The GSF were responsible for the protection of Gaia and its territories on the ancient homeworld. Shortly after the Great Migration, the Gaian Security Forces were put under the administration of the Gaian Colonial Authority. During the Colonial Era, the GSF was utilized by the Colonial Authority to protect settlements and vital infrastructure. This small, elite force was also used during the turbulent times of the era to suppress rioting and other seditious acts against the Colonial Authority. Following the signing of the Sora Agreement, the Gaian Security Forces was formally reorganized into today's Gaian Defence Forces.