Between Two Worlds: A Rajput Officer in the Indian Army, 1905-21 describes two societies in early twentieth century colonial India— the British governmental and military society and the regional Rajasthan aristocracy. The book portrays life in the peacetime cantonments of Mhow (1906-14) and New Delhi (1918-19), on the Western and Mesopotamian fronts of World War One, and on the Northwest Frontier (1919-21) during the Pathan uprising. The story is tied together by the pioneering experiences of Captain (later Major-General) Amar Singh, an aristocrat of Jaipur state. Singh's personal story, revealed through the diary that he kept throughout his adult life, details Indo-British cultural collaboration. Amar Singh was, unwittingly, an excellent ethnographer of Rajput society, extensively recording family tensions, marriages, estate development, and the decadent lives of Rajput princes. Singh, in 1905, was among the first Indians given an officers' commission in the British Indian Army. However, it was not until 1917 that he received his full officer commission.

"...the author has accomplished the substantial effort needed to make appropriate selections from Amar Sing's voluminous diary linked by extensive commentary in a thorough and excellent manner. The selections provide a good sense of the variety and depth of the information and insights that the diary offers." - Journal of Asian Studies

"Ellinwood has ended up providing a rich introduction to the culture and politics of the Raj and its armed forces in the first decades of the twentieth century. The bibliography is extensive, the tone of the test conversational and informative, and the uninitiated reader will finda sure guide to the pecularities and intricacies of British rule and colonial society, no small achievement. The text is of particular valuefor teaching undergraduates, as it provides a seductive mis of first person experience with Ellinwood's summaries of relevant scholarship. Military specialists will find extensive discussion of Indianization, coupled with Amar Singh's often reserved observations of the treatment he received as well as portraits of sympathetic British officers." - Military History

"Between Two Worlds [is] a welcome addition to the literature on British India's military. …[this] balanced and well documented work [can be seen] as a corrective for those who argue that the similarities between Britain and India's aristocracy played a more important role than race and gender in the workings of the Raj." - Journal Of Colonialism and Colonial History