Herodotus Book 6: Erato, 111 "On the right wing the polemarch Callimachos was leader (for the custom of the Athenians then was this, that the polemarch should have the right wing)"
Herodotus Book 6: Erato, 114 "In this part of the work was slain the polemarch Callimachos after having proved himself a good man,..."