Which of the following statements regarding rebel strategies and leadership during 1857 are correct?
1. Rebels often turned to displaced rulers like Bahadur Shah and Rani Lakshmi Bai for leadership.
2. Decisions among sepoys were sometimes taken through panchayats composed of native officers.
3. Religious figures like Maulvi Ahmadullah Shah mobilised masses through spiritual appeals.
4. British sources provide comprehensive insight into rebel strategies and motives.