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The United States Marine Corps is organized within the Department of the Navy, which is led by the Secretary of the Navy (SECNAV). The most senior Marine commissioned officer is the Commandant of the Marine Corps, responsible for organizing, recruiting, training, and equipping the Marine Corps so that it is ready for operation under the command of the unified combatant commanders.
The United States Department of the Army ( DA) is one of the three military departments within the Department of Defense of the U.S. The Department of the Army is the federal government agency within which the United States Army (U.S.) is organized, and it is led by the secretary of the Army, who has statutory authority under 10 United States ...
The Army is the only branch of service to begin both officer and enlisted service numbers at No. 1. Marine Corps officer numbers also begin at No. 1 but Marine Corps enlisted numbers start much later at #20,001. There is also no service No. 1 in the Navy, Coast Guard, or Air Force although the earliest recorded Air Force officer number was No. 4.
1st Marine Division. Marine Corps Base Camp Pendleton. California. 2nd Marine Division. Marine Corps Base Camp Lejeune. North Carolina. 3rd Marine Division. Marine Corps Base Camp Smedley D. Butler. Okinawa, Japan.
As the Army Reserve and Army National Guard is much larger than the Marine Corps's Reserve, many more former active duty marines continue their service in the Army's reserve components. The Army does not require transfers from the Marines, Air Force Security Forces , or special operations of any branch to attend Army Basic Combat Training. [199]
United States. The United States Army ( USA) is the land service branch of the United States Armed Forces. It is one of the eight U.S. uniformed services, and is designated as the Army of the United States in the U.S. Constitution. [14] The Army is the oldest branch of the U.S. military and the most senior in order of precedence. [15]
The armed forces consist of six service branches: the Army, Marine Corps, Navy, Air Force, Space Force, and Coast Guard. [14] [15] All six armed services are among the eight uniformed services of the United States. [16] Each of the different military services is assigned a role and domain. The Army conducts land operations, while the Navy and ...
A mixed aircraft and ship formation of military vehicles during an exercise with USN and JASDF vehicles. In most countries, the armed forces are divided into three military branches (also service, armed service, or military service): army, navy, and air force. Many countries have a variation on the standard model of three basic military branches.