Theodore Ayrault Dodge, Hannibal: A History of the Art of War Among the Carthaginians and Romans (1891), p.610-611. To the 300,000 Roman battle deaths recorded by the Roman historian Appian (Pun. 20.134), Dodge adds 100,000 disease deaths for the Italian front, and the same again for Spain. read more
This list of wars by death toll includes death toll estimates of all deaths that are either directly or indirectly caused by war. These numbers usually include both the deaths of military personnel which are the direct results of battle or other military wartime actions, as well as the wartime/war-related deaths of civilians, which are the results of war-induced epidemics, diseases, famines, atrocities, genocide, etc. read more
His final estimate is 500,000 Roman and 270,000 Carthaginian soldiers dead of all causes. Will Durant, Caesar and Christ (1944) Lake Trasimene (217 BCE): "nearly all" in Roman Army of 30,000 killed. read more