<human>:  Could casualties from deadliest war rival France's population?
<bot>: No, casualties from the deadliest war in history probably could not rival France's population. The deadliest war in history was World War II. Over 56 million people died during World War II. The population of France as of 2019 is 66 million. So casualties from the deadliest war in history probably could not rival France's population.