By the growing pressure of Russia from the thirtieth day;
And generally by the bad strategic situation to which their right-handed advance will commit them as it becomes pronounced.
All these factors will operate increasingly in proportion as the German advance continues and every day that passes.
6. Time is also required for the naval blockade to make itself felt on German commerce, industry, and food prices, as described in the Admiralty Memorandum, and for these again to react on German credit and finances already burdened with the prodigious daily cost of the war. All these pressures will develop simultaneously and progressively. [The Chancellor of the Exchequer has drawn special attention to this and to the very light structure of German industry and economic organisations.]
7. By the fortieth day Germany should be extended at full strain both internally and on her war fronts, and this strain will become daily more severe and ultimately overwhelming, unless it is relieved by decisive victories in France. If the French army has not been squandered by precipitate or desperate action, the balance of forces should be favourable after the fortieth day, and will improve steadily as time passes. For the German armies will be confronted with a situation which combines an ever-growing need for a successful offensive, with a battle-front which tends continually towards numerical equality. Opportunities for the decisive trial of strength may then occur.
8. Such a policy demands heavy and hard sacrifices from France, who must, with great constancy, expose herself to invasion, to having her provinces occupied by the enemy, and to the investment of Paris, and whose armies may be committed to retrograde or defensive operations. Whether her rulers could contemplate or her soldiers endure this trial may depend upon the military support which Great Britain can give; and this must be known beforehand, so that the French war-plans can be adjusted accordingly, and so that we may know, before we decide, what they would be prepared to do.
9. The following measures would appear to be required to enable Great Britain to take an effective part in the decisive theatre of the war:—
The four divisions of the expeditionary army, with their auxiliary troops, should be sent on the outbreak of war to France 107,000