The Expeditionary Warfare School, established at Quantico as the Amphibious Warfare School in 1921, is a nine-month course providing career-level professional military education, with emphasis on combined arms operations, warfighting skills, tactical decision-making and Marine Air Ground Task Forces in amphibious operations. It prepares Marine Captains to function as commanders and staff officers at appropriate levels within the Operating Forces and Supporting Establishment. In addition, it provides career-level professional military education to selected officers from the Marine Corps Reserve.
The overall focus of this school’s education is the development of the students' communication skills and leadership abilities. Occupational Field Expansion Courses in Ground Combat, Aviation and Combat Service Support supplement the core curriculum to more fully prepare graduates for their anticipated billets.