5923303 British and Indian officers of an unknown Indian Army cavalry unit, 1920s circa (b/w photo) by Unknown photographer, (20th century); National Army Museum, London; (add.info.: British and Indian officers of an unknown Indian Army cavalry unit, 1920s circa. Photograph, India, 1920s circa. After the First World War the desire for Indian self determination grew and political reforms were introduced by the British. Changes to the Indian Army were part of this wider process. Several regiments were selected to be ?Indianised?. The appointment of new British subalterns was terminated in order to create entirely Indian officer cadres, up to and including the rank of colonel. Whereas previously all Indian commissioned officers had ranked below the most junior British subaltern, their status was now based on rank alone. They could also command British troops and lead their own units, something impossible prior to the reforms. From an album of 482 photographs, 1858-1947, associated with 19th King\'s Own Lancers, 18th Lancers, 18th Bengal Cavalry and 19th Bengal Cavalry.); by National Army Museum ; out of copyright.