The United States Marine Corps (USMC or U.S. Marine Corp.) is a branch of the U.S. Armed Forces responsible for providing power projection from the sea, using the mobility of the United States Navy to rapidly deliver combined-arms task forces. It is one of seven uniformed services of the United States. The Marine Corps is a component of the U.S. Department of the Navy, often working closely with naval forces for training, transportation, and logistics; however, the Marine Corps is a separate branch.