I think I’ve read somewhere that British rulers promised to leave India for such services. That seems far fetched to me because these races were promoted as martial races during British era and it was just another job offered to the Indians by gora rulers with perks. Besides, there were some forced recruitment by British army from India as well.
An early symptom of the weakness of the empire was Britain’s withdrawal from India in 1947.
During World War Two, the British had mobilised India’s resources for their imperial war effort. They crushed the attempt of Mahatma Gandhi and the Indian National Congress to force them to ‘quit India’ in 1942.
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Nonetheless, in an earlier bid to win Congress support, Britain had promised to give India full independence once the war was over.**
Britain hoped that a self-governing India would remain part of the imperial defence.
Within months of the end of the war, it was glaringly obvious that Britain lacked the means to defeat a renewed mass campaign by the Congress. Its officials were exhausted and troops were lacking.
But the British still hoped that a self-governing India would remain part of their system of ‘imperial defence’. For this reason, Britain was desperate to keep India (and its army) united. These hopes came to nothing.
By the time that the last viceroy, Lord Louis Mountbatten, arrived in India, Congress and its leader Jawaharlal Nehru had begun to accept that unless they agreed to partition, they risked a descent into chaos and communal war before power could be transferred from British into Indian hands.
It was left to Mountbatten to stage a rapid handover to two successor governments (India and Pakistan) before the ink was dry on their post-imperial frontiers.