sentence: On 6 June 1857, at the time of the rebellion by forces of the East India Company at Cawnpore, the British contingent had taken refuge at an entrenchment in the northern part of the town.
modified: On 6 June 1857, at the time of the rebellion by forces of the East India Company at Cawnpore, the British contingent had taken refuge at an entrenchment in the northern part of the town.