On 14 September, Sher Singh's army also rebelled. Other than opposition to the British, Mulraj and Sher Singh had no aims in common. Sher Singh decided to move his army north, to join that of Chattar Singh, who had also rebelled. However, some British officers had taken steps to secure vital fortresses. For the time being, Chattar Singh was unable to leave Hazara, as the British held Attock on the Indus River, and the passes over the Margalla Hills separating Hazara from the Punjab. Instead, Sher Singh moved a few miles north and fortified the crossings over the Chenab River, while awaiting events.