Task: Question Generation
Input (English): Within the Army, British officers who initially trained at the company's own academy at the Addiscombe Military Seminary, always outranked Indians, no matter how long their service. The highest rank to which an Indian soldier could aspire was Subadar-Major (or Rissaldar-Major in cavalry units), effectively a senior subaltern equivalent. Promotion for both British and Indian soldiers was strictly by seniority, so Indian soldiers rarely reached the commissioned ranks of Jamadar or Subadar before they were middle aged at best. They received no training in administration or leadership to make them independent of their British officers.
Output (English): While in EIC army  the British officer outrank the indian officer they  both promoted based on?