In 1918, the town was captured by British forces and by 1921, became incorporated into the Kingdom of Iraq. It remained an administrative center of a qadaa, part of the larger Ramadi-based liwa of Dulaym. Anah's "qadaa" also included the subdistricts of Hīt, al-Qa'im and Jubba. The townspeople's long feud with the inhabitants of Rawa was settled diplomatically by 1921. Its territory to the west was dominated by the subtribes of Anizzah, while to the east the Jarba branch of the Shammar held sway.