5924746 Surma Valley Light Horse, Assam, 1905 (b/w photo) by Unknown photographer, (20th century); National Army Museum, London; (add.info.: Surma Valley Light Horse, Assam, 1905. Photograph from an album compiled by L E Dening, 4th (Queen\'s Own) Hussars, 1899-1927. The Surma Valley Light Horse was originally formed as the Sylhet Volunteer Rifle Corps in 1880 and later became the Cachar and Sylhet Mounted Rifles in 1883. The unit was formed mainly of tea planters from the Silchar area in Assam, in North East India. In 1886 it became designated the Surma Valley Light Horse and retained this title until it was disbanded along with all other Indian Auxiliary Force units in 1947, when India gained Independence.); by National Army Museum .