Indianisation of British colonial bureaucracy was a process introduced in the later period of British India (early 20th century) whereby Indian officers were promoted to more senior positions in government services, formerly reserved for the British. In the Indian police, the rank of Deputy Superintendent was introduced to prepare Indian officers for promotion to higher rank. In the armed forces, the process referred to the replacement of British officers by Indians. The progress was slow and unsatisfactory to the Indian nationalist politicians, however events, mainly the Second World War and the partition and independence which followed it, overtook the programme.