The Franco-Syrian War took place during 1920 between the Hashemite rulers of the newly established Arab Kingdom of Syria and France. During a series of engagements, which climaxed in the Battle of Maysalun, French forces defeated the forces of the Hashemite monarch King Faisal, and his supporters, entering Damascus on July 24, 1920. A new pro-French government was declared in Syria on July 25, headed by 'Alaa al-Din al-Darubi and the region of Syria was eventually divided into several client states under the Mandate for Syria and the Lebanon. The British government, concerned for their position in the new mandate in Iraq, agreed to declare the fugitive Faisal as the new king of Iraq.

The Hashemites, also House of Hashim, are the royal family of Jordan, which they have ruled since 1921, and were the royal family of the kingdoms of Hejaz (1916–1925), Syria (1920), and Iraq (1921–1958). The family had ruled the city of Mecca continuously from the 10th century, frequently as vassals of outside powers, and ruled the thrones of the Hejaz, Syria, Iraq, and Jordan following their World War I alliance with the British Empire.