Autograph Letter Signed from Rustam Khan to Lieutenant-Colonel H. C. Tytler, Commandant, thanking the officers of the 17th Regiment of Bengal Cavalry [Bengal Lancers], for conferring on him 'the honorary rank of captaincy'.

12mo, 3 pp. 38 lines. Text clear and complete. The two leaves attached along the margins. Signed in Devanagari and European ('So: Rustam Khan Captain') scripts. He acknowledges 'receipt of the Commission conferring on me the honorary rank of captaincy with a deep sense of gratitude to you and all the Officers of the Regiment'. States that he will 'ever cherish a grateful remembrance of all that the Officers and Regiment have done for me'. He will always 'pray God Almighty to grant His Most Gracious Majesty long life and prosperous Reign for bestowing this great honour on me, His poor humble servant.' Concludes by praying that 'the Regiment in which I had the honour to serve will always maintain its high honour and its arms will ever be successful and the whole rank & file will continually be happy under the kind protection of the Officers'. The London Gazette of 15 September 1911 listed Khan among 'Native Officers, Indian Army, [...] granted the honorary rank of Capt. on retirement'.