Enigma : How the Poles Broke the Nazi Code Book

	Publisher's note
	Enigma before 1940	1
	Introduction	1
	Poznan	5
	The enigma machine	7
	The break	11
	Enigma - made in Poland	15
	BS4 versus chi-dienst	17
	On the brink of war	20
	The bombe	22
	War begins	27
	Bruno outside Paris	31
	The battle of France	34
	Cadix in southern France	38
	Enigma in Great Britain : ultra	49
	Principal personalities at Bletchley Park	53
	The impact of enigma/ultra on allied strategy and military operations	56
	The Battle of Britain, 1940	57
	North Africa and the Mediterranean	59
	The Italian campaign	60
	The Battle of the Atlantic	61
	"Overlord" and the allied offensive in France	67
	German V1 and V2 weapons	69
	Conclusion	71
	Epilogue	75
	Bibliography	77
App. A	People of the enigma : Jerzy Witold Rozycki (1909-42)	81
App. B	Before enigma : Jan Kowalewski and the early days of the Polish Cipher Bureau (1919-22)	87
App. C	The French contribution to the breaking of enigma	97
App. D	A new challenge for an old enigma-buster	113
App. E	A British cryptanalyst salutes the Polish cryptanalysts	123
App. F	The Polish success with enigma in British literature	127
	Index	155