From World War I through recent conflicts, military medical personnel have treated casualties on the battlefield, transported the wounded to safety, managed the logistics of care, and investigated new technologies to prevent further deaths. Whether they were already established in the field or were treating patients for the first time, their medical training was put to the test in combat, in the field hospital, and in the laboratory. For these healers, medicine was their mission, and they carried it out with grace, determination, and honor. Their stories illustrate a shared commitment to their patients, and to each other.