It has been the business of my life to teach history: and the informal division of labour which comes to pass in a University has led me to pay special attention to the military side of it. This aspect of history involves much comparison of statements and weighing of evidence, and is therefore calculated to be very useful to those for whom the study of history is, not their permanent occupation, but the means of completing their mental training. Campaigns and battles present in an exceptionally clear shape the stock problems of history, what was done, why it was done, what were the results,...