Do you remember the 24th of July 1914? I think you do, for it was just about the beginning of that time which most boys and girls consider the very happiest of all the year. Your school had just broken up, the books were all put away, and you fondly hoped that you would see no more of them for a month or six weeks. You were all agog for the holidays. Your mind was full of that jolly seaside place to which you were going to-morrow or the next day. You were dreaming of boats and bathing, of games on the sands, of bicycle spins in the country lanes, and picnics in the woods. And in the midst of all these happy dreams, perhaps you heard your father say, as he turned his newspaper at breakfast time,-- "_Yesterday Austria sent a very harsh Note[3] to Servia. Looks like more war in the East._" I daresay you paid no attention to this remark. To you it meant nothing at all. You would have been far more interested if your father had told you how Middlesex was getting on with Kent, and whether Woolley or Hearne or P. F. Warner had made another century or not. But your father's remark was really far more important than all the cricket matches that were ever played, or that ever will be played. It was the first appearance of the bolt from the blue. Few, even the wisest of us, realized that it was the beginning of the greatest war that the world has ever known; a war of such vastness and terror that men would speak of it as _Armageddon_[4]--that is, a war similar to that which is described in the Book of Revelation, when "the kings of the earth and of the whole world gather them to the battle of God Almighty." [Illustration: War. (_From the picture by Sir Edwin Landseer, R.A., in the National Gallery of British Art._)] As your father's remark was so important, let us try to understand its meaning. He mentioned two countries, Austria and Servia, and you would easily guess that there was some quarrel between them. It is not easy to explain to you exactly what the quarrel was about, and perhaps you will find the explanation a little dull; but if you are really to understand how the war arose, you must not mind a little dulness. We shall come to the exciting events by-and-by. Look at the map on the next page. It shows you the two countries which had fallen out--Austria and Servia. You see at a glance that the Austrian Empire, which consists of Austria and Hungary, is by far the larger country; in fact, Austria-Hungary is seven times as large as Servia, and has eleven times as many people. There is no country on earth which contains so many different races as Austria-Hungary. Within its bounds we find Germans, Italians, Magyars,[5] Jews, Armenians,[6] and Gypsies, as well as eight distinct Slav races.