What was the most common cause of death for soldiers serving the civil war?

The most common cause of death for soldiers during the Civil War was disease, accounting for approximately two-thirds of all fatalities. Conditions such as dysentery, typhoid fever, pneumonia, and malaria were prevalent due to poor sanitation, inadequate medical care, and crowded living conditions in camps. Combat-related injuries were also significant, but the impact of disease far outweighed battlefield deaths.