190 million is the common estimate for 200 AD, the battle took place in 216 BC when the estimate was ~150 million. And on a related note, our sources for the d

190 million is the common estimate for 200 AD, the battle took place in 216 BC when the estimate was ~150 million. And on a related note, our sources for the death toll in the Battle of Cannae is poor. The main source is Livy, writing from a biased point of view nearly 200 years after the battle. The overall point that Rome came back from a tremendous loss in the Battle of Cannae is true, I wouldn't focus too hard on the numbers.