major

In the United States Army, Marine Corps, Air Force and Space Force, major is a field officer above the rank of captain and below the rank of lieutenant colonel. It is equivalent to the naval rank of lieutenant commander in the other uniformed services. Although lieutenant commanders are considered junior officers by their services (Navy and Coast Guard), the rank of major is that of a senior officer in the United States Army, the United States Marine Corps, and the United States Air Force. The pay grade for the rank of major is O-4. The insignia for the rank consists of a golden oak leaf, with slight stylized differences between the Army/Air Force version and the Marine Corps version. Promotion to major is governed by the Department of Defense policies derived from the Defense Officer Personnel Management Act of 1980. Army A major in the U.S. Army typically serves as a battalion executive officer (XO) or as the battalion operations officer (S3). Majors can also serve as Company Commanding Officers, a major can also serve as a primary staff officer for a regiment, brigade or task force in the areas concerning personnel, logistics, intelligence, and operations. A major will also be a staff officer / action officer on higher staffs and headquarters. In addition, majors command augmented companies in Combat Service and Service Support units. U.S. Army majors also command Special operations companies, such as U.S. Army Special Forces companies, Civil Affairs companies, Military Information Support Operations companies, and certain types of separate, numbered vice lettered, Military Intelligence companies. Selected majors in the United States Army attend the 10-month Command and General Staff School at Fort Leavenworth, with a greater number attending satellite schools administered by Fort Leavenworth at Fort Belvoir, Virginia and Redstone Arsenal, Alabama. 960 graduated from the Leavenworth course in 2009, at the time the largest class in Army history.