From Hundred Days: The Campaign That Ended World War I, by Nick Lloyd (Basic Books, 2014), Kindle Loc. 4440-4447, 4754-4770:
For so long the various theatres of war in Europe, Italy and the Middle East had seemed frozen and immobile; stalemated and deadlocked. And then in late autumn, with surprising suddenness, the thaw finally set in. By 30 September, Bulgaria had signed an armistice, which opened up the southern flank of the Central Powers. Austro-Hungary was already on the verge of capitulation, and it took only a limited offensive by the Italian Army in the final week of October – the Battle of Vittorio Veneto – to push it over the edge. In the Middle East, the Ottoman Empire was now entering its final death throes. What remained of the Turkish Army in Palestine had been routed at the Battle of Megiddo in late September, and over the following month General Sir Edmund Allenby’s troops pushed north, mercilessly harassing the retreating Turkish columns. Aleppo fell on 26 October and within days an armistice was signed on the island of Mudros – thus bringing the war in the Middle East to a victorious conclusion.
By the first week of November the German Army was in full retreat across the Western Front. From the air ‘we saw all the roads crowded with columns of men marching back,’ wrote one German pilot. Endless lines of weary troops splashed and shuffled their way eastwards, bowed down with their equipment, looking over their shoulders in fear, half expecting to see Allied aircraft or cavalry squadrons ready to scatter them again. It was an awful sight: the faces of young boys overshadowed by the steel helmets that were too big for them, or hobbling along in boots that had been worn away long ago; old veterans who had seen too many battles marching along with glassy eyes and a grim acceptance of death or wounding. It was by now a motley army; the exact opposite of the legions of proud feldgrau that had marched across Europe in the summer of 1914 on their way to enact Count von Schlieffen’s great war plan. The German Army had reached its end; worn down by four years of merciless slaughter and pounded into dust by the brutal Allied artillery bombardments. Some still believed in victory, in some divine intervention – a catastrophic outbreak of flu in Paris or London; a devastating fallout between the English and Americans perhaps – but most realized there was little they could do. How could they defeat the endless power of the Allied guns or their swarms of tanks? How many Americans would they have to kill before they too gave in? And in any case, was it really worth fighting and dying for any more? Did anyone really care whether Alsace-Lorraine was French or German?
Casualties were nothing short of catastrophic. Fritz von Lossberg estimated that by the time the German Army reached the Antwerp–Meuse Line it had lost over 400,000 men and 6,000 guns. Other authorities put it higher, and it is possible that between 18 July and 11 November the Army suffered 420,000 dead and wounded with another 385,000 men being taken prisoner. Such a magnitude of loss was simply unsustainable, and when this was combined with the thousands of casualties from Germany’s spring offensives earlier in the year – perhaps as high as a million – it meant that her army was bleeding to death.