now known as the Kingdom of Karagwe. Pre-colonial ethnic relations in Ankole The pastoralist Hima (also known as Bahima) established dominion over the agricultural Iru (also known as Bairu) some time before the nineteenth century. The Hima and Iru established close relations based on trade and symbolic recognition, but they were unequal partners in these relations. The Iru were legally and socially inferior to the Hima, and the symbol of this inequality was cattle, which only the Hima could own. The two groups retained their separate identities through rules prohibiting intermarriage and, when such marriages occurred, making them invalid. The Hima provided cattle products that otherwise would not have been available to Iru farmers. Because the Hima population was much smaller than the Iru population, gifts and tribute demanded by the Hima could be supplied fairly easily. These factors probably made Hima-Iru relations tolerable, but they were nonetheless reinforced by the superior military organization and training of the Hima. The kingdom of Ankole expanded by annexing territory to the south and east. In many cases, conquered herders were incorporated into the dominant Hima stratum of society, and agricultural populations were adopted as Iru or slaves and treated as legal inferiors. Neither group could own cattle, and slaves could not herd cattle owned by the Hima. Ankole society evolved into a system of ranked statuses, where even among the cattle-owning elite, patron-client ties were important in maintaining social order. Men gave cattle to the king (mugabe) to demonstrate their loyalty and to mark life-cycle changes or victories in cattle raiding. This loyalty was often tested by the king's demands for cattle or for military service. In return for homage and military service, a man received protection from the king, both from external enemies and from factional disputes with other cattle owners. The mugabe authorized his most powerful chiefs to recruit and lead armies on his behalf, and these warrior bands were charged with protecting Ankole borders. Only Hima men could serve in the army, however, and the prohibition on Iru military training almost eliminated the threat of Iru rebellion. Iru legal inferiority was also symbolized in the legal prohibition against Iru owning cattle. And, because marriages were legitimized through the exchange of cattle, this prohibition helped reinforce the ban on Hima-Iru intermarriage. The Iru were also denied highlevel political appointments, although they were often appointed to assist local administrators in Iru