Military Cryptanalytics

From the Introduction in Part I, Volume I, by Callimahos: "This text represents an extensive expansion and revision, both in scope and content, of the earlier work entitled 'Military Cryptanalysis, Part I' by William F. Friedman.

This expansion and revision was necessitated by the considerable advancement made in the art since the publication of the previous text."

All the declassified books except the third part of Military Cryptanalytics have been reprinted by Aegean Park Press.

Part II includes material on repeating-key and bipartite systems and periodic ciphers.

For the Aegean Park Press edition, Wayne G. Barker added programs for the TRS-80.