[1] He was gazetted into the 17th Lancers[5] as a cornet on 31 January 1840[6] and rose steadily: lieutenant, 15 April 1842;[7] captain, 27 June 1845[8] and major on 23 October 1854.
[11] Subsequent service in India (where he commanded the 2nd Cavalry at Malwa[12]) lead to further promotions, notably Colonel of the 7th Hussars.
[13] Appointed CB in 1861[14] he continued to rise until his final promotion to the rank of General twenty years later.
[17][18][19] Mary Henrietta's sister, Frances Lucy Wightman, married Matthew Arnold.
The Arnold's daughter Eleanore Mary Caroline was married in 1889 to Armine Wodehouse, after her father's death, from a house taken by Benson in London.