“John L. Alger ... has written what is probably the most comprehensive study of the development of the principles of war. Alger begins with the earliest known treatises on war and works his way chronologically to the present. ... Alger has included in his book an extensive bibliography, but particularly helpful are the lengthy appendices which include aphorisms related to the conduct of war, many appearing for the first time in English translation. ...Military historians should find it a helpful reference work.”– Historical Journal