He began his military career as an officer in the army of General Allenby from 1916 to 1921. In 1920, after the Battle of Maysalun and the fall of Faisal's government of Syria left Transjordan with no central authority, he was dispatched by the British government to Transjordan to help maintain order during this interregnum. "With a fine sense of history" he established the ephemeral but whimsically named "National Government of Moab" in Kerak with himself as president, which lasted until Abdullah took control of the country.