How many casualties were there in the civil war how do this numbers compare with other American wars?

The American Civil War resulted in approximately 620,000 to 750,000 military deaths, making it the deadliest conflict in American history. This number exceeds the total American fatalities of World War I, World War II, the Vietnam War, and the Korean War combined. The staggering loss highlights the war's profound impact on the nation, both in terms of human cost and societal change. In comparison, World War II, the next deadliest conflict, resulted in about 405,000 U.S. military deaths.