Transcriber's Note
Obvious punctuation errors were corrected.
Inconsistent hyphenation wss made consistent.
Ludendorff consistently spelled Ludendorf but has not been corrected.
p. 10: Apparent missing line in: "brought about the final defeat of the Germans in this [newline] sonov."
pp. 45-6: Several misspellings of Rennenkampf corrected.
p. 46: He was atacked frontally -> He was attacked frontally.