The Entrenchment at Kanpur The sketch represents the entrenchment which was chosen by Sir Hugh Wheeler as a place for defence for the English at Kanpur. The rebellion broke out there on 4 June 1857 and the attack on the entrenchment began on 6 June. The English held out until 26 June when they capitulated on condition of safe passage for Allahabad. The Entrenchment after the fall of Kanpur The photograph, taken after the British reoccupation of the city, shows the battered condition of the building in the entrenchment.