The third in a projected four-volume work that will cover the history of the Army Medical Department from 1775 to 1941, this volume traces the development of the department from its rebirth as a small, scattered organization in the wake of the Civil War, through the trials of the Spanish-American War and the Philippine Insurrection, up to the entrance of the United States into World War l. A time of revolutionary change both in the organization of the U.S. Army and in medicine, the period climaxed with the golden age of Army medicine, when U.S. medical officers played a leading role in research that developed new and effective weapons in the war against epidemic disease. The Army Medical Department, 1865-1917, continues the contributions to the history of military medicine initiated by the preceding volumes.