Military conditions prior to Rumania's venture.
Failure of Germans at Verdun.
I have said that there was not bad faith toward Rumania on the part of the Allies when they induced her to enter the war, and that there was not lack of intelligence on the part of Rumania when she followed their advice. In order to understand the point of view of the Allies it is necessary to have clearly in mind the military conditions existing in the whole theatre of operations during the six months prior to Rumania's fatal venture. In February the Germans had assembled a large portion of their mobile reserves for their effort against Verdun. The constant wastage of German human material continued almost without intermission into May, with spasmodic recurrences up to the present time. Hundreds of thousands of Germans were drawn from the visible supply of enemy manhood by these offensives. By early May the failure of the Verdun venture had probably become manifest to the German High Command, and there is evidence that they were commencing to conserve their troops for other purposes.
General Brussiloff's offensive.
On the 5th of June there began in Galicia and Volhynia the great offensive of General Brussiloff which lasted, almost without intermission, on one or another part of his front, until October. By the middle of June this drive of the Russians began to divert German troops for the defense of Kovel. In July started the British-French offensive in the West.
German troops diverted to Eastern front.
With their reservoirs of men already greatly reduced by the Verdun attacks, the Germans, by the middle of July, were compelled to find supports to meet the continuous offensives on both the Eastern and Western fronts. I cannot estimate the number of troops required by them against the French and British, but I do know that between the 5th of June and the 30th of August a total of thirty divisions of enemy troops were diverted from other fronts against Brussiloff alone. This heavy diversion was the only thing that prevented the Russians from taking Kovel in July and forcing the entire German line in the East. So continuous and pressing were the Russian attacks that more than two months elapsed before the enemy could bring this offensive to a final stop on the Kovel sector. Enemy formations arriving were ground up in detail as fast as they came, and by the middle of July it was clear to us, who were on the fighting line in Volhynia, that the Germans were having extraordinary difficulties in filling their losses from day to day. In June their first supports came by army corps; in July they were coming by divisions; and early in August we checked the arrival of single regiments, while the Austrians were often so hard pressed that they sent isolated battalions to fill the holes in their lines.
Teuton losses.
In the meantime the Russians had cleared the Bukovina of the enemy. It was believed that Rumania could put in the field twenty-two divisions of excellent troops. The enemy losses in prisoners alone, up to the first of September, from Brussiloff's offensive, were above four hundred thousand and over four hundred guns. It seemed then that these extra twenty-two divisions thrown in by Rumania could meet but little resistance.
The Allied plan of operation.