Kshatriya is one of the four castes in Hinduism of which, traditionally, the ruling or military classes belonged to. In ancient Vedic society, a person's caste was assigned based on aptitude (guna), conduct (karma), and nature (swabhava). Over the years, these groups became hereditary. During the medieval period these Kshatriya warriors served Rajput kings and were loyal to the last. Excellent swordsmen with superb morale with high quality shields, weapons, and armour make them the elite of the Indian battlefield.