United States Colonial Marine Corps (Earth-4125)

"Force-in-readiness."

- - USCMC's motto

The United States Colonial Marine Corps (USCMC), commonly known as the Colonial Marines, is the primary exploratory and military body of the United Republic of North America. They are specialized in force projection and the independent operation in environments far from home and in extended periods of time. The USCMC is a successor to the United States Marine Corps, and are at permanent readiness for deployment across American-controlled space.

Part of the United America Allied Command, the USCMC is one of the many military bodies on Earth to compose the United Nations Space Command by leasing soldiers, weapons, vehicles and other resources to the United Nations' aid. The Colonial Marines, or their borrowed troops, have fought in dozens of planets, including Tientsin (8 Eta Bootis A III), Linna 349, Harvest, LV-426, Reach, and Earth, during the Insurrection and the Human-Covenant War.