On 23 May 1919, a few months after being appointed governor of Sulaymaniyah, Barzanji raised 300 tribal fighters, expelled British supervisors and proclaimed himself "Ruler of all Kurdistan", initiating the first of the Mahmud Barzanji revolts.[3] Early in the rebellion, the Kurds saw some success with the successful ambush of a light British column that strayed beyond Chamchamal. On both sides of the border, tribes proclaimed themselves for Shaykh Mahmud.[3]
Using his authority as a religious leader, Sheykh Mahmud called for a jihad against the British in 1919 and thus acquired the support of many Kurds indifferent to the nationalist struggle.[citation needed] Although the intensity of their struggle was motivated by religion, Kurdish peasantry seized the idea of "national and political liberty for all" and strove for "an improvement in their social standing".[citation needed]
Tribal fighters from both Iran and Iraq quickly allied themselves with Sheykh Mahmud as he became more successful in opposing British rule. According to McDowall, the Sheykh's forces "were largely Barzinja tenantry and tribesmen, the Hamavand under Karim Fattah Beg, and disaffected sections of the Jaf, Jabbari, Sheykh Bizayni and Shuan tribes".[4] The popularity and numbers of Sheykh Mahmud's troops only increased after their ambush of a British military column.[citation needed]
Among the supporters of Sheykh Mahmud was also the 16-year-old Mustafa Barzani, who was to become the future leader of the Kurdish nationalist cause and a commander of the Peshmerga forces. Barzani and his men, following the orders of Barzani tribal Shekyh Ahmed Barzani, crossed the Piyaw Valley to join Sheykh Mahmud Barzanji. Even though they were ambushed several times on the way, Barzani and his men managed to reach Sheykh Mahmud's location, however were too late to aid the revolt.[5] The Barzani fighters were only a part of the Sheykh's 500-person force.
As the British became aware of the sheykh's growing political and military power, they were forced to respond militarily, and two brigades defeated the 500-strong Kurdish force in the Bazyan Pass
[3] on 18 June, and occupied
Halabja on the 28th, ending the Kurdish state and defeating the rebellion.
[6][7]