Similar in scope to H. H. Cunningham's Doctors in Gray, George Worthington Adams' Doctors in Blue remains the definitive work on medical history of the Union army. Adams calculates that 300,000 Union soldiers lost their lives during the war. Confederate attacks account for only a third of these deaths, disease for the rest. In addition, there were a startling 400,000 wounded or injured and almost 6,000,000 cases of illness. Undoubtably, behind the sickness and mortality statistics of the Civil War lie ignorance and inefficiency.