Mbh 7.7.3b

Speaking unto one another thus and filled with joy, they proceeded, applauding and worshipping the son of Radha. As regards our army, it was arrayed by Drona in the form of a Sakata (vehicle); while the array of our illustrious foes, O king, was in the form of a Krauncha (crane), as disposed, O Bharata, by king Yudhishthira the just in great cheerfulness. At the head of their array were those two foremost of persons viz., Vishnu and Dhananjaya, with their banner set up, bearing the device of the ape. The hump of the whole army and the refuge of all bowmen, that banner of Partha, endued with immeasurable energy, as it floated in the sky, seemed to illumine the entire host of the high-souled Yudhishthira. The banner of Partha, possessed of great intelligence, seemed to resemble the blazing Sun that riseth at the end of the Yuga for consuming the world. Amongst bowmen, Arjuna is the foremost; amongst bows, Gandiva is the foremost; amongst creatures Vasudeva is the first; and amongst all kinds of discs, Sudarsana is the first. Bearing these four embodiments of energy, that car unto which were yoked white steeds, took up its position in the front of the (hostile) army, like the fierce discus upraised (for striking). Thus did those two foremost of men stand at the very head of their respective forces, viz., Karna at the head of thy army, and Dhananjaya at the head of the hostile one. Both excited with wrath, and each desirous of slaying the other, Karna and Arjuna looked at each other in that battle.’