The Indo-Pakistani war of 1947–1948, also known as the first Kashmir war, was a war fought between India and Pakistan over the princely state of Jammu and Kashmir from 1947 to 1948. It was the first of four Indo-Pakistani wars between the two newly independent nations. Pakistan precipitated the war a few weeks after its independence by launching tribal lashkar (militias) from Waziristan, in an effort to capture Kashmir and to preempt the possibility of its ruler joining India.

The Dominion of India, officially the Union of India, was an independent dominion in the British Commonwealth of Nations existing between 15 August 1947 and 26 January 1950. Until its independence, India had been ruled as an informal empire by the United Kingdom. The empire, also called the British Raj and sometimes the British Indian Empire, consisted of regions, collectively called British India, that were directly administered by the British government, and regions, called the princely states, that were ruled by Indian rulers under a system of paramountcy. The Dominion of India was formalised by the passage of the Indian Independence Act 1947, which also formalised an independent Dominion of Pakistan—comprising the regions of British India that are today Pakistan and Bangladesh. The Dominion of India remained "India" in common parlance but was geographically reduced. Under the Act, the British government relinquished all responsibility for administering its former territories. The government also revoked its treaty rights with the rulers of the princely states and advised them to join in a political union with India or Pakistan. Accordingly, the British monarch's regnal title, "Emperor of India," was abandoned.