Kammas served as ministers, military generals, and governors in the Vijayanagara Empire. During the reign of Krishnadevaraya, Kammas are said to have formed the bulwark of the Vijayanagara army. Their role in protecting the last great Hindu kingdom of India was significant. Krishnadevaraya's court had a significant presence of Kamma officers, and they entered into matrimonial alliances with the royal family. It's possible that the influence of Kamma generals led to the importance of the Telugu language in Vijayanagara and the rise of Telugu colonies in Tamil Nadu. During the reign of the Vijayanagara Empire, Kamma Nayaks (commanders) were appointed as governors in many areas of Tamil Nadu. Some of the notable Kamma Nayak clans of Vijayanagara include the Pemmasanis, Sayapanenis, and Ravellas.