fifty five
by the number of fatalities World War II
The Vietnam War had the least support by American citizens. The war lasted for over 18 years. The USA lost 58,220 soldiers.
Exspressways
For Americans the civil war had the most fatalities.
I checked the US fatalities for the date shown in the movie and the names were not there. If you go to icasualties.org you will find all US and coalition fatalities for the war. You can filter to find specific dates, locations etc.
147, Gulf War
China.
69,000
China was the nation least affected by the Spanish-American-Cuban War. The conflict began in 1898, and lasted for just over 3 months.
The US Civil War? Over 750,000 fatalities.
No, it did not do that. At least not an official war. The two closest American wars after the Civil War are the Spanish-American War and World War I. Neither of those were started because of the Battle of Antietam.
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.