The prince then attended the Edmund A. Walsh School of Foreign Service at Georgetown University in Washington, D.C. in 1987, undertaking advanced study and research in international affairs.[1] He returned home to serve as assistant commander of the 17th Royal Tank Battalion in 1989, later being promoted to major.[14] Abdullah attended a staff course at the British Staff College in 1990, and served the following year in the Office of the Inspector General of the Jordanian Armed Forces as the Armored Corps representative.[14] He commanded a battalion in the 2nd Armored Cavalry Regiment in 1992 and was promoted to colonel the following year, commanding the 40th Brigade.[14]