The Secret War: Spies, Codes and Guerrillas 1939–1945. Max Hastings

      The only Abwehr officer known to have been a source for MI6 was Hans-Berndt Gisevius in Switzerland, a Prussian lawyer of giant physical proportions who served five years in the Gestapo and hated it, before transferring to the Ministry of Internal Affairs in 1938 and thence to the Abwehr. Canaris sent him to Zürich under diplomatic cover as vice-consul, and thereafter he passed information to Halina Szymańska, whom he knew was an informant for both British and Polish intelligence. Gisevius provided material for twenty-five reports dispatched from Bern to Broadway between August 1940 and December 1942, some of them citing Canaris’s professed opinions; also among his sources was Hitler’s finance minister, Hjalmar Schacht.

      Szymańska, the conduit, was the formidable and beautiful wife of the former Polish military attaché in Berlin, and once dined with Canaris in Bern. Much of Gisevius’s material was accurate: in January 1941 Szymańska passed on his report about German aircraft stocks, together with the Abwehr man’s opinion that an invasion of Britain was ‘off’. In April she quoted Gisevius’s view, based on information from Schacht, that Hitler would invade Russia during the following month – which indeed was then his intention. But, as usual with intelligence, the German also passed on some rubbish: on 28 March 1941 he told Szymańska that German forces would not take the offensive in Libya – two days before Rommel launched a major onslaught.

      Gisevius’s contribution, and those of a handful of his colleagues, scarcely made the Abwehr a pillar of Resistance against the Nazis. Its wartime shortcomings were the product of indolence and incompetence rather than of considered treachery. Canaris was a poor delegator, who chose weak subordinates. German intelligence had one notable success abroad, in suborning Yugoslav officers ahead of their army’s 1941 emergency mobilisation, in time to sabotage the process, but thereafter its espionage operations were uniformly unsuccessful. The admiral was nonetheless too much a German patriot actively to assist his country’s enemies. Like many such people of the time, he harboured muddled political views. A monarchist and a conservative, Franco’s Spain was his spiritual home; he travelled there as often as he could, not merely to visit the large Madrid Abwehr HQ at Calle Claudio Coello 151, but also to commune with like-minded Spanish politicians and grandees. The Abwehr’s ship-watching service in Spain, the Unternehmen Bodden, monitoring Allied movements through the Straits of Gibraltar with the aid of advanced infra-red technology, and reporting them to the Kriegsmarine and the Luftwaffe’s Air Fleet 1 in Italy, formed the most impressive element in the organisation’s overseas operations.

      Yet if Canaris bears much responsibility for the shortcomings of Germany’s ‘big picture’ intelligence, he could never have run an honest operation under the dead hand of Hitler, any more than Moscow Centre could do so in the shadow of Stalin. Reports on the condition and prospects of the enemy were permitted to reach conclusions only within parameters acceptable to the Führer. This crippling constraint was symbolised by Hitler’s annotation on an important intelligence report about Russian agricultural conditions: ‘This cannot be.’ Kurt Zeitzler, chief of the army general staff, wrote on 23 October 1942, the eve of Stalingrad: ‘The Russians no longer have any reserves worth mentioning and are not capable of launching large-scale offensives.’ Himmler in 1944 declared without embarrassment that his first requirement from Germany’s intelligence services was not truth, but loyalty to the Führer. This was an important statement, the most vivid expression of the huge weakness of the Abwehr and the RSHA throughout the Second World War.

      Historian Michael Handel has written: ‘Leaders in a democratic system are generally more inclined to consider a wide variety of options than those who have always functioned within authoritarian or totalitarian political systems. In authoritarian countries, where the climb to the top is an unrelenting struggle for power, habits of cooperation and openness are usually less developed … Tolerance for ideas that deviate from the “party line” … are seen as personal criticism.’ These features of almost all dictatorships crippled German intelligence activities beyond the battlefield, and sometimes also within it. Himmler’s deputy Reinhard Heydrich, for instance, was far more interested in using the RSHA as a weapon against the Nazi empire’s internal enemies than as a means of securing information about its foreign foes. Hitler never wished to use intelligence as a planning or policy-making tool. He recognised its utility only at a tactical level: the Nazis were strikingly incurious about Abroad.

      Yet the fact that the Abwehr was an unsuccessful intelligence-gathering organisation did not mean that Hitler’s armed forces were blind on the battlefield: their access to tactical intelligence was generally good. In the first half of the war Germany’s wireless interceptors and codebreakers enjoyed successes which would today seem impressive, were they not measured against those of the British and Americans. The Wehrmacht had excellent voice-monitoring units, which in every theatre of war provided important information. ‘The Y Service was the best source of intelligence,’ said Hans-Otto Behrendt, one of Rommel’s staff in North Africa. In August 1941, aided by an Italian employee, two agents of the Sezione Prelevamento – the ‘extraction section’ of Italian intelligence – opened the safe of the military attaché’s office at the US embassy in Rome. They removed his codebook – Military Intelligence Code No. 11 – and photographed it. This enabled the Axis to read substantial traffic through the ensuing ten months, and proved a seriously significant intelligence break. In 1942 it had especially grievous consequences for Eighth Army in the desert, since the US military attaché in Cairo, Col. Bonner Fellers, reported in detail to Washington on British plans and intentions. A German intelligence officer paid generous tribute to ‘this incomparable source of authentic and reliable information, which … contributed so decisively during the first half of 1942 to our victories in North Africa’.

      At sea, some of the Royal Navy’s ciphers were found aboard the British submarine Seal, captured off the German coast on 5 May 1940, owing to an extraordinary and culpable failure by the minelayer’s officers to destroy its confidential papers. The Kriegsmarine was able to read much of the Royal Navy’s North Sea traffic until August 1940, and some warship communications until September 1941. Throughout the first half of the war, the Kriegsmarine’s B-Dienst read the Royal Navy’s convoy codes, with grievous consequences for Allied shipping losses. Even where signals could not be decrypted, radio-traffic analysis enabled Axis intelligence staffs to judge enemy deployments remarkably effectively, at least until the second half of the war, when Allied commanders became more astute and security-conscious. Patrolling, air reconnaissance and PoW interrogations all provided streams of useful data to German operational commanders, as did open-source information – enemy newspaper and broadcast monitoring.

      In the first phase of the war until 1942, while the Wehrmacht was triumphant on battlefields across Europe, these sources sufficed to tell its commanders all that they felt they needed to know about the world, and about their enemies. Victories masked the abject humint failures of the Abwehr. As long as Germany was winning, why should anyone make trouble about imperfections in the war machine? It was only when Hitler’s armies started losing that hard questions began to be asked about the Reich’s abysmal political and strategic intelligence. Hitler himself was, of course, much to blame, but Canaris exercised operational responsibility. The admiral fell from grace, though it was by then far too late – probably impossible, for reasons institutionalised in the Nazi system – to repair his corrupt and ineffective espionage organisation.

      While anxious not to be a bad man, Canaris lacked the courage to be a good one. Far from being a substantial historical figure, he was a small one, grappling with dilemmas and difficulties far beyond his capabilities. Trevor-Roper professed to see a close resemblance between the admiral and Menzies, his British counterpart. Both men were conservative, honourable – and weak. By a trifling coincidence, Canaris had a mistress in Vienna whose sister was married to Menzies’ brother. Trevor-Roper came to regard the Abwehr as ‘a mirror image of [MI6], with many of the same weaknesses and absurdities … I recognised, across the intervening fog of war, old friends of Broadway and Whaddon Hall transmuted into German uniform in the Tirpitz Ufer or at Wannsee.’ The admiral did little to merit his eventual fate at the hands of Hitler’s executioners: he frequently talked treason, but did nothing to further it. Far from becoming a martyr to the cause of a ‘good Germany’, he was merely an incompetent servant of an evil one.