The UNSC fought constant battles in a loosely-defined civil war known as the Insurrection.

The most urgent concern was to contain the spread of the Insurrectionists, a violent resistance movement consisting of colonists who wanted independence from the Unified Earth Government. Prior to the Covenant attack on Harvest in 2525, the UNSC was stretched across human space. Although the Interplanetary War brought a great deal of suffering to both the colonial population and the residents of Earth, it also united most of humanity's military forces by the end of the 22nd century. After initiating massive militarization propaganda throughout its off-world colonies, through the UNSC, the UN defeated Frieden and Koslovic insurgent forces in a conflict known as the Interplanetary War, which consisted of several side-battles that took place on Mars, the Jovian Moons and the South American rainforests. The UNSC served mainly as overseer of United Nations military operations in space. The UNSC was formed in the 22nd century, a time when remnants of old cultural ideologies clashed for supremacy in the Sol System. The United Nations Space Command ( UNSC) is the military, exploratory, and scientific agency of the Unified Earth Government (UEG) and has acted as the emergency governing body of the human race at large for a time. ' Per Mare, Per Terras, Per Constellatum.' - Motto ( Latin for 'Through Sea, Through Land, Through the Stars.') Commander-in-Chief of the Office of Naval Intelligence.Commander-in-Chief Fleet/Chief of Naval Operations.

Military defense of Earth and her colonies Military, exploratory, and scientific force.UNSC Supreme Headquarters, URNA, Earth.HIGHCOM Facility Bravo-6, Sydney, Australia, Earth (Primary).SPARTAN-IIs, UNSC Marines, and several UNSC vehicles

Covenant War era The various Symbols of the UNSC

Halo Recruit for mac instal