The soldier's diet in the Civil War has been known as poor, and a number of illnesses and disorders have been associated with it. However, a nutritional analysis placed within the context of mid-nineteenth century American nutrition has been lacking. Such an approach makes clear the connection between illness and diet during the war for the average soldier and defines the importance of nutrition's role in the war. It also provides a bridge from the American diet to the soldier diet, outlining correlations between the two and examining the influence of physicians, chemists, and health reformers on the Civil War diet.