Union (Northern) Soldiers:
- Killed in battle: Approximately 110,000-130,000 soldiers
- Died from disease, accidents, and other causes: Approximately 225,000-250,000 soldiers
Confederate (Southern) Soldiers:
- Killed in battle: Approximately 75,000-95,000 soldiers
- Died from disease, accidents, and other causes: Approximately 258,000-275,000 soldiers
It is important to note that these numbers are approximate and may vary based on different sources and estimations. The total number of soldiers who died during the Civil War is estimated to be around 620,000-750,000.