The ethnocentric and racialist overtones of the Victorian empire have long been acknowledged. Most work in this field has generally centred on the mid to late nineteenth century and, by emphasizing the intellectual and cultural currents in domestic society, has focused our attention on the metropole. This reveals only part of the equation; British attitudes towards the outside world arose from a complex matrix of ideas, assumptions and contacts that linked the metropole and colonial environments. In order to understand more fully British responses to non-European societies, and the impact these had on imperial developments, this paper will examine the Bengal army in the 1820s and demonstrate that it was during this period, and under this institution, that many of the assumptions were established under which the later Raj would operate. Of great importance were experiences in the Burma War (1824–26) and the simultaneous mutiny at Barrackpore which, by bringing to the surface doubts about the loyalty and reliability of the Bengal army, hastened a transition from an army modelled on caste lines to one that rested principally on race. This transformation from a caste-based army to an army of martial races was not fully completed, although the foundations were laid, in the years before the Indian Mutiny of 1857, largely because even those who rejected Bengal's dependence upon the highest castes could not bring themselves to argue for the recruitment of the lowest castes no matter what ‘race’ they were drawn from.