General Report on Tunny

Page 2

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PART 1 - INTRODUCTION
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11	GERMAN TUNNY

11A	Fish Machines
11B	The Tunny Cipher Machine
11C	Wheel Patterns
11D	How Tunny is used
11E	The Tunny Network

12	CRYPTOGRAPHIC ASPECTS

12A	The Problem
12B	Modern Strategy
12C	Chi-breaking and Setting
12D	Motor and Psi-breaking and Setting
12E	Methods involving Key

13	MACHINES

13A	Explanation of the Categories
13B	Counting and Stepping Machines
13C	Copying Machines
13D	Miscellaneous Simple Machines

14	ORGANISATION

14A	Expansion and Growth
14B	The Two Sections in 1945
14C	Circulation

15	SOME HISTORICAL NOTES

15A	First Stages in Machine Development
15B	Early Organisation and Difficulties
15C	The Period of Expansion