The Civil War had the most AMERICAN deaths
623,123 deaths
The American Civil War was the deadliest war in American History. About 620,000 individuals lost their lives during the Civil War. Confederate deaths were 260,000 of which 93,000 were killed in combat, while Union deaths were 360,000 of which 110,000 deaths were in combat. Disease was the major cause of death in the civil war. Out of 620,000 deaths, 417,000 were from diseases while 203,000 were killed in combat. In total deaths the American Civil War was the deadliest war in American History with over 620,000 fatalities. Although in combat related deaths World War II remains the deadliest conflict with 292,000 combat deaths (416,000 total). (see the related link)
The Soviet Union (U.S.S.R.). By far. And the most civilian deaths by far.
The American Civil War resulted in an estimated 620,000 to 750,000 military deaths, making it the deadliest conflict in U.S. history. In comparison, World War II, which had the highest American casualties among international conflicts, resulted in about 405,000 deaths. Other wars, such as World War I and the Vietnam War, had significantly lower casualties, with approximately 116,516 and 58,220 American deaths, respectively. Overall, the Civil War's casualties far exceed those of other American wars, highlighting its profound impact on the nation.
Disease and neglect
the most casualties in a war was the American Civil War with 495,332 deaths and behind it is WW2 with 405,399 deaths.
There were 1733 American deaths in the Mexican-American war.
623,123 deaths
Of the approximately 620,000 deaths during the American Civil War, only about 210,000 were the result of battle wounds. The remaining deaths were due to disease, starvation, abuse and other non-battle causes.
Total US deaths in WWI; 57,476
There were 360,000 Union soldier deaths and 258,000 Confederate soldier deaths during the American Civil War.
The American Civil War was the deadliest war in American History. About 620,000 individuals lost their lives during the Civil War. Confederate deaths were 260,000 of which 93,000 were killed in combat, while Union deaths were 360,000 of which 110,000 deaths were in combat. Disease was the major cause of death in the civil war. Out of 620,000 deaths, 417,000 were from diseases while 203,000 were killed in combat. In total deaths the American Civil War was the deadliest war in American History with over 620,000 fatalities. Although in combat related deaths World War II remains the deadliest conflict with 292,000 combat deaths (416,000 total). (see the related link)
Approximately 258,000 Confederate soldiers died in the American Civil War. Most deaths were due to disease.
russia had the most deaths in ww1
Disease.
There were 360,000 Union soldier deaths and 258,000 Confederate soldier deaths during the American Civil War.
Military 416,800 Civilian 1,700