Doctors in the wars.
D049668:History, 15th Century; D049669:History, 16th Century; D049670:History, 17th Century; D049671:History, 18th Century; D049673:History, 20th Century; D006801:Humans; D008887:Military Medicine; D010820:Physicians; D006113:United Kingdom; D014481:United States; D014857:Warfare; D014947:Wounds and Injuries