Following the Ottoman defeat in the
Battle of Shaiba in mid-April 1915, the Ottoman authority in the eyes of Mesopotamian Arabs had been discredited. In the city of Najaf, locals felt confident enough to begin directly challenging local Ottoman authority, and were ready for an open revolt. There are 2 different accounts as to how the revolt began: According to the first account, after Ottoman troops forced women to lower their veils while turning over every last rock in pursuit of the absent men, resentments finally boiled over on 22 May as rebels laid siege to government buildings and the army barracks, erected checkpoints, and even tore up the telegraph poles for several miles to prevent any relief from reaching the garrison. After a 3-day long gun battle, the Ottoman governor in Baghdad negotiated the safe withdrawal of the soldiers stationed in the city. According to the second account, a survivor of the Battle of Shaiba, Karim al Haji Sa'ad, entered the town, which was under martial law at the time, with 30 men through a hole in the wall and resisted Ottoman attempts to retake Najaf for 24 hours, before help allowed him to secure the city, leading the Ottoman troops present to withdraw.
Charles R. H. Tripp notes that although the revolt was anti-Ottoman in a broad sense, the uprising was not in support of the British war effort and instead intended to grant the city higher administrative autonomy. In either case, the rebels had secured for themselves an independent city under the rule of 4 different sheikhs of the Zuqurt and Shumurt: Saiyid Mahdi al Saivid Salman, Haji 'Atiyah Abu Qulal, Kadhim Subhi and Haji Sa'ad ibn Haji Radhi. All sources agree that the British captured Najaf in 1917, but disagree on the details: According to Abbas Kadhim, Najaf's independence ended in July 1917 when the British appointed captain
Francis Balfour as political officer for Shamiyya and Najaf. This was clear from the new taxation system and the appointment of political officers to each area.
William R. Marshall, British commander-in-chief of Mesopotamia, stated in a report to London that the political officer in Najaf, William M. Marshall, was popular among the local inhabitants at the time of the uprising, and attributed the uprising to enemy agents. == Uprising and siege ==