Wrong.
The American Civil War was the deadliest war in American history, resulting in the deaths of 620,000 soldiers and an undetermined number of civilian casualties.
In compaison, 418,500 Americans (incl. 416,800 military personnel and 1,700 civilians) died as a result of World War II.
Regards,
Hmm, looked it up again and see you were right. Guess I was wrong about being wrong in my original post. Do two wrongs make a right here? LOL
PS Thanks for the correction.