Major

In the United States Army, major is a senior officer, with the pay grade of O-4. Major ranks above Captain and below Lieutenant Colonel. Major is equivalent to a lieutenant commander in the U.S. Navy.

A major in the U.S. Army typically serves as a battalion executive officer or as the battalion operations officer (S-3). A major can also serve as a primary staff officer for a brigade or task force in the areas concerning personnel, logistical and operations. In addition, majors command augmented companies in Combat Service and Service Support units. U.S. Army majors also command U.S. Army Special Operations companies such as a Special Forces Operational Detachment Bravo (ODB), Civil Affairs (CA) company or Psychological Operations company.