The Imperial Secretariat Service (commonly abbreviated as the ISS) was the earliest organised civil service with the Indian Civil Service of the Indian Government under the British colonial rule in India

British Raj

British Raj was the British rule in the Indian subcontinent between 1858 and 1947; The term can also refer to the period of dominion...

.

This service still continues in the contemporary Civil Services of India

Civil Services of India

The Civil Services of India refer to the civil service and the permanent bureaucracy of the Government of India...

, though these are now organised differently post-independence.

History

The role of the service was ensuring of the continuity of administration in the Central Secretariat called as the “Administration of the Secretariat and House Keeping”.