. Battlefields of the World War, western and southern fronts; a study in military geography . ndred yards the Allied commandersin a series of terrific battles sacrificed their men literally by thetens of thousands. Let the reader compare Figures 34 and 35and he will see that the sacrifice was justified; for the gain is tobe measured not in linear yards of advance, but in the increaseddepth and breadth of observation behind the enemys lines. GEOLOGICAL STRUCTURE OF THE HILLS In a war of movement it is the surface forms of the landalone which play a principal r61e in the military
. Battlefields of the World War, western and southern fronts; a study in military geography . ndred yards the Allied commandersin a series of terrific battles sacrificed their men literally by thetens of thousands. Let the reader compare Figures 34 and 35and he will see that the sacrifice was justified; for the gain is tobe measured not in linear yards of advance, but in the increaseddepth and breadth of observation behind the enemys lines. GEOLOGICAL STRUCTURE OF THE HILLS In a war of movement it is the surface forms of the landalone which play a principal r61e in the military in a war of position, where the opposing armies dig inand for long periods remain rooted to a given piece of ground,the character and structure of the soil and rocks beneath thesurface exercise a profound influence upon the condition of thearmies and the nature of the fighting. Throughout the entire area now under discussion there ex-tends a layer of chalk (Fig. 37) practically horizontal and sothick that ordinarily its bottom is neither exposed in the deepest io6 BATTLEFIELD OF THE SOMME. Fig. 36—Block diagram of the Mont Kemmel-Vimy Ri STRUCTURE OF THE HILLS 107
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Keywords: ., boo, bookcentury1900, bookdecade1920, booksubjectworldwar19141918
