Austria-Hungary, by an easily appreciable paradox, possessed, though but 80 per cent. of the Germans in population, a larger available untrained reserve.  This was because that empire trained a smaller proportion of its population by far than did the Germans.  It is probable that Austria-Hungary was able to train and put forward during the second period some three million men.

It is a great error, into which most critics have fallen, to underestimate or to neglect the Austro-Hungarian factor in the enemy’s alliance.  Without thus nearly doubling her numbers, Germany could not have fought France and Russia at all, and a very striking feature of all the earlier weeks of 1915 was the presence in the Carpathians of increasing Austro-Hungarian numbers, which checked for more than three months all the Russian efforts upon that front.

Say that Austria-Hungary nearly doubled her effectives (apart from wastage) in this second period, and you will not be far wrong.

Russia, which upon paper could almost indefinitely increase during the second period her numbers in the field, suffered with the advent of winter an unexpected blow.  Her equipment, and in particular her munitioning (that is, her provision of missiles, and in especial of heavy shell), must in the main come from abroad.  Now the German command of the Baltic created a complete blockade on the eastern frontier of Russia, save upon the short Roumanian frontier; and the entry of Turkey into the campaign on the side of the enemy, which marked the second period, completed that blockade upon the south, and shut upon Russia the gate of the Dardanelles.  The port of Archangel in the north was ice-bound, or with great difficulty kept partially open by ice-breakers, and was in any case only connected with Russia by one narrow-gauge and lengthy line; while the only remaining port of Vladivostok was six thousand miles away, and closed also during a part of the winter.

In this situation it was impossible for the great reserves of men which Russia counted on to be put into the field, and the Russians remained throughout the whole of this second period but little stronger than they had been at the end of the first.  If we set them down at perhaps somewhat over three millions (excluding wastage) towards the end of this second period, we shall be near to a just estimate.

We can now sum up and say that, apart from wastage, the forces arrayed against each other after this full development should have been about 120 men for the central powers of the enemy—­35 (and perhaps ultimately 40) men against them upon the West, and, until sufficient Russian equipment could at least be found, only some 30 men against them upon the East.

Luckily such figures are wholly changed by the enormous rate of the enemy’s wastage.  The Russians had lost men almost as rapidly as the enemy, but the Russian losses could be and were made good.  The handicap of the blockade under which Russia suffered permitted her to maintain only a certain number at the front, but she could continually draft in support of those numbers; and though she lost in the first seven months of the war quite four hundred thousand in prisoners, and perhaps three-quarters of a million in other casualties, her strength of somewhat over three millions was maintained at the close of the first period.