Take a map of France and from a point just south of Paris draw a straight line to the Vosges; twenty or thirty miles to the north draw another. Between the two is the black district of the Marne and Nancy battles. It is the district of ruined villages, destroyed farms; it is the region where every hillside--so it will seem to the traveller--is marked by these pathetic crosses. It is a region in which the sense of death and destruction is abroad. Go forty miles north again and draw two more lines, and this is the region not of the death and destruction of yesterday, but of to-day; this is the front, where the graves are still in the making, the region of the Oise to the Meuse, from Noyon to Verdun. On this day our route led eastward through the villages which in September, 1914, woke from at least a century of oblivion, from the forgetting that followed Napoleon's last campaign in France to a splendid but terrible ten days: Courtacon, Sézanne, La-Fère Champenoise, Vitry-le-François, the region where Franchet d'Esperey and Foch fought, where the "Miracle of the Marne" was performed. Mile after mile the countryside files by, the never-changing impression of a huge cemetery, the hugest in the world, the stricken villages, now and then striving to begin again, a red roof here and there telling of the first counter offensive of peace, of construction made against the whirlwind that had come and gone. Always, too, nothing but old men and women, these and children, working in the broad fields, still partially cultivated, but no longer the fields of that perfectly cared for France of the other peace days. Women and children at the plough, old men bent double by age still spending such strength as is left in the tasks that war has set for them. This is the France behind the front, and, aside from the ruined villages and graves, the France that stretches from the Pyrenees to the Marne, a France from which youth and manhood are gone, in which age and childhood remain with the women. Yet in this land we were passing how much of the youth and manhood of France and Germany was buried in the graves the crosses demonstrated at every kilometre. But a hundred miles east of Paris there begins a new world. The graves, the shell-cursed villages, remain, but this is no longer the France of the Marne fighting and of the war of two years ago. At Vitry-le-François you pass almost without warning into the region which is the back of the front to-day, the base of all the line of fire from Rheims to the Meuse, and suddenly along the road appear the canvas guideposts which bear the terse warning, "Verdun." You pass suddenly from ancient to contemporary history, from the killing of other years to the killing that is of to-day--the killing and the wounding--and along the hills where there are still graves there begin to appear Red Cross tents and signs, and ambulances pass you bearing the latest harvest.