India Office [SEP] dissolved or abolished
of British India in 1947 into the two new independent dominions of India and Pakistan, the India Office was closed down. Responsibility for the United Kingdom's relations with the two new countries was transferred to the Commonwealth Relations Office (formerly the Dominions Office).
Origins of the India Office (1600–1858).
The East India Company was established in 1600 as a joint-stock company of English merchants who received, by a series of charters, exclusive rights to English trade with the "Indies", defined as the
of 1812 is referenced in the line 'rockets red glare' which appears in the Star-Spangled Banner. 
After Waterloo in 1815, Europe was at peace until the 1853 Crimean War. Overall supervision of the regiment was transferred to the War Office when the Board of Ordnance was abolished in 1855 and the War Office School of Gunnery established in Shoeburyness in 1859. When the British East India Company was dissolved in 1862, its artillery function was absorbed by the Royal artillery, giving it a total strength of 29 horse batteries