8.) Ludendorf's assertion that Rennenkampf's force consisted of 24 divisions, almost 400,000 men, is an obvious falsehood. A single army is never made up of more than six army corps, for facility and expediency in commanding, and this is a basic rule in military organizations. Ludendorf knows this very well, but it appears that he consciously misstated the truth in this case as well. 9.) In reality Rennenkampf's army consisted of eight divisions or four army corps,--the 2nd, the 3rd, the 4th and the 20th, and of six cavalry divisions. Altogether his force consisted of about 160,000 men. The bulk of his infantry could not have reached the front at that time, as it was necessary to organize the rear and to coordinate the railway movement in Prussia, as the Russian rail gauge is much wider than that adopted by the German railway system. Rennenkampf's front, therefore, was occupied largely by cavalry, supported only in section by weak detachments of infantry. 10.) Rennenkampf could not have aided Samsonov even if he had known his situation, because he was already at a distance of 90 miles from his own railway lines, and Ludendorf himself admits that it is not possible to operate safely further than 80 miles from one's railroads. Rennenkampf's army, therefore, without provisions and ammunition, had to wait until its rear was made secure and was unable to move further. Appendix No. II. Ludendorf--Rennenkampf His second battle--with Rennenkampf--Ludendorf describes with a similar distortion of facts. On this occasion he goes so far as to assert that Rennenkampf had not 400,000 men but 600,000, and he states at the same time that Rennenkampf was a traitor because he retreated too soon. As we have already seen, Rennenkampf had only about 160,000 men, and he was reinforced by one more corps, the 22nd,--about 40,000 additional men; therefore his army could not have exceeded 200,000 men. Ludendorf places his own army at 300,000 men, much less, of course, than his actual strength, but even at that rate he attacked 200,000 Russians with 300,000 German troops, outnumbering his adversary one and a half times.