Hilaire Belloc 
Two Maps of Europe and some Aspects of the Great War [EPUB ebook] 

Excerpt: "The six chapters of this little book discuss and explain six separate and most important phases of the present war. Every effort has been made to deal with the headings selected as comprehensively and as simply as possible, and it is hoped that, in this convenient form, the handbook will be welcomed by those who wish to follow the campaign with understanding. The various articles reprinted were written during the winter of the present year (1914-15), and many of the conclusions reached apply, therefore, to that period of the war only."