The interest in the Balkan Wars of 1912-1913 has exceeded the expectations of the publishers of this volume. The first edition, which was published five months ago, is already exhausted and a second is now called for. Meanwhile there has broken out and is now in progress a war which is generally regarded as the greatest of all time--a war already involving five of the six Great Powers and three of the smaller nations of Europe as well as Japan and Turkey and likely at any time to embroil other countries in Europe, Asia, and Africa, which are already embraced in the area of military operations.