The fragile British control over Fārs was disrupted in May 1918 when Ṣawlat-al-Dawla, leading the Qashqais and other pro-German tribal forces from Kazerun, Dashti, Dashtestan and Tangestan, embarked upon a war against the British.
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The uprising of people of Tangestan prolonged nearly for 7 years in which Daliran Tangestan (the brave of Tangestan) pursued two goals: guarding Bushehr, Dashtestan and Tangestan as their habitat and preventing the foreign forces from infiltrating the country and securing the independence of the country.