Gil the Gunner or The Youngest Officer in the East

Gilbert Vincent, very young at the time, joins the army to serve in India. Various battles and engagements take place, as a result of which Gil gets injuries, and spends a lot of time unconscious or recovering. At one stage he is captured by the local Rajah, who is extremely wealthy, and who takes a shine to our hero, making sure that he is treated extremely well by his domestic servants. Gil is offered any jewels he likes, but declines the gift, saying that his freedom to go back to his father in his regiment was worth more than any amount of opulent jewels. According to Wikipedia: "George Manville Fenn (January 3, 1831, Pimlico - August 26, 1909, Isleworth) was a British writer. He worked as a teacher in Lincolnshire, until he became printer, editor and publisher of various magazines. He had eight children with his wife Susanna Leake, whom he had married in 1855. Most of his work consists of adventure stories for young readers, featuring Explorers, Smugglers, young Adventurers and Seamen. His adult novels offer critical social commentary on Victorian England, especially reconsidering economic questions."