Photograph of a portion of Sherpur, showing the Sher Derwaza, taken by the Bengal Sappers and Miners, an engineering arm of the Indian Army in c. 1879. Notes accompanying this print read, 'Portion of Sherpur Cantont. shewing Genl. Roberts' Gateway - with Sher Derwaza Heights in the background. The Sherpur Cantonment was situated a mile north of the city of Kabul, Afghanistan. It was planned by the Amir of Afghanistan, Shere Ali Khan (1825-1879), as the main winter headquarters of his army. The outer wall of the cantonment was over a mile and a half long with massive towers at regular intervals for artillery. In October 1879 British forces under General Roberts entered Kabul and occupied the fortress after the death of the British resident Cavagnari and his mission during the Second Afghan War (1879-80). Roberts was tasked with establishing a line of communication with British forces via the Khyber Pass, securing his force at Kabul and punishing those responsible for the death of Cavagnari.