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Operations against the Marri and Khetran tribes (also known as the Marri Punitive Expedition) was the British name for a punitive expedition carried out against the Marri and Khetran tribes of Balochistan, British India between February and April 1918. The Marri rose against the British authorities around 18 February, encouraged by rumours that the British were short of manpower due to the First World War. British attempts at conciliation were repulsed and, on 20 February, a major attack was made by 1,000 – 3,000 Marri upon the British post at Gumbaz. This attack was repulsed by a much smaller British force that inflicted heavy losses upon the Marri. A subsequent withdrawal of British forces from Kohlu and its occupation by the Marri led the Khetrans to join the rising. The town of Barkhan was occupied by Marri-Khetran forces and raids were made upon villages in the Sibi and Loralai districts; railways in the area were also attacked.

The British assembled the Marri Field Force of British Army and British Indian Army troops under Major-General Richard Wapshare to combat the rising. Two columns under Brigadier-Generals T. H. Hardy and Philip Miles went on the offensive into territory occupied by the tribes. Miles inflicted a heavy defeat upon a Marri-Khetran force at Fort Munro on 15 March and then captured Barkhan, ending Khetran involvement in the rising. Hardy defeated a large Marri force at Hadb on 3 April and afterwards, assisted by bombing by the Royal Flying Corps, captured the Marri capital of Kahan. The Marri sardar Khair Bux Mari surrendered to the British on 8 April.

The campaign caused a significant reduction in tax revenue from the area and damage to private and government property. A council of elders was assembled after the campaign which recommended compensation payments be made by the Marri and the imprisonment of members of both tribes. The rising inspired rebellions by the Mengal and Gurgnari tribes, who killed their own sardars. And by the Musakhel, which was put down by part of the Marri Field Force.