The Indian Police Service (IPS) is one of the three All India Services as envisaged in the Constitution of India. It replaced the Indian Imperial Police in 1948, a year after India became independent from the United Kingdom.
Along with the Indian Administrative Service (IAS) and the Indian Forest Service (IFS), the IPS is one of the three All India Services — its officers can be employed by both the Union Government and the individual states.
The service was envisaged to command and provide leadership to state police forces and the union territories and also Central Armed Police Forces (BSF, SSB, CRPF, CISF, & ITBP) and Central Police Organisations. IPS officers played a key role in formation of Central armed Police Forces and their subsequent growth. The supreme Court has clarified in its order that grant of NFFU to CAPFs doesn’t impact rights of IPS fficers regarding deputations to CAPFs The Bureau of Police Research and Development (BPR&D) is responsible for research and development of the police force in India.