Complex sentence: Sangam literature and hero stones found in Tamil Nadu show that Chekavars were engaged in combat often on behalf of a lord and in this hero stone, Chekavars generally bear an image of an armed man along with a Shiva Linga.
Split into simpler sentences: Sangam literature and hero stones found in Tamil Nadu show that Chekavars were engaged in combat, often on behalf of a lord. On these hero stones, Chekavars are generally depicted by an image of an armed man along with a Shiva Linga.