In the meantime, the political situation had changed sharply. Hitler had become Stalin's best friend and the communists likewise friends of the fascists. There ensued an exchange of gifts - the most up-to-date German military aeroplanes for Stalin (including the top secret ME109, JU87, JU88, DO217, HElll and even the ME110) in exchange for the surrender of all German communists who had taken political asylum in the Soviet Union. Hitler's calculation was very simple. In the short time before war broke out, the Russians would not be able to copy the planes, but he would have the heads of his political opponents. It was a fruitful deal for Stalin too. He was bored with the German communists and now he would be able to give them to the Gestapo in exchange for the best German aeroplanes. In addition to the ordinary members, there were members of the German Central Committee and the Politburo, together with the editors of the communist newspaper. These were not taken to Germany, but the Gestapo was told it could shoot them in situ, in the Moscow area. However, as far as the former GRU agents were concerned, the decision had been taken not to hand them over. They knew too much. The German embassy in Moscow was informed that they had all died in Spain and had never got as far as Moscow. The fascists did not object but suggested they would present one more aircraft at the same price. Unfortunately, the former agents, not knowing anything about the bargaining that was going on, again declared a hunger strike, and this decided their fate. The Soviet side now admitted to the fascists that they were in Moscow and proposed a compromise. The fascists could shoot their victims in the Soviet Union without talking to them. The execution took place among the huge coal bunkers of the Kashierski Electric Power Station. Beforehand, the Gestapo men had personally identified each of the people to be executed and photographed them; then, under cover of protracted whistling of locomotives, they shot them all. Afterwards, joint detachments of the GRU, the Central Committee of the Soviet communist party and the Gestapo burnt the bodies in the furnaces of the power station.
The Germans' mistake was threefold: they believed too quickly in the promises of the GRU; they insisted too strongly on the GRU's fulfilling its promises; and they forgot that if somebody puts a high enough price on the head of an agent, however good he may be, the GRU will sell him without hesitation.
In the meantime the Party, under the leadership of Stalin, arrived face to face with the ultimate necessity of subjugating all layers of Soviet society and utterly eradicating dissension. The decision was taken by the Party to purge the whole country of potential dissidents. Today we have irrefutable proof that the 'Great Terror' was carefully planned and prepared. On the testimony of A. Avtorhanov the Central Committee of the Party had, as long ago as 13 May 1935, taken the decision to create a special security commission for carrying out mass repressions in the country, which took place in 1937 to 1938.
For almost two years the Special Commission prepared the most bloody page in the history of mankind. Its members were Stalin, Zhdanov, Yezhov, Shkiriatov, Malenkov and Voyshinski. It is interesting to note that the then head of NKVD, Yagoda, was not a member of the Commission, and this was a sensible move. Before carrying out its massive blood-letting of the whole of society, the Party took pains to purge the surgical instrument itself, the NKVD organs. The purge began secretly as early as 1935 and at that stage concerned only the organs and the overseas residencies of the NKVD. In order not to frighten anybody, it was carried out secretly and without public trials. Naturally it was the GRU which was entrusted with the task of purging the NKVD overseas organs. In 1935 Yan Karlovich Berzin, the GRU's chief, travelled to the Far East with special powers and a group of trusted helpers. Secret orders appointing one I. S. Unshlikht and later S. T. Uritski as chief of the GRU were issued. But no order was issued for Berzin to relinquish his post. In other words, the appointment of Uritski was simply a cover-up for the long absence of Berzin. In the Far East Berzin and his assistants secretly liquidated the leading illegals of the NKVD. In the following year Berzin, with his assistants, appeared in Spain. His official job was Chief Advisor to the Spanish Government, a post in which he was extremely active. Firstly, he endeavoured to direct the activities of the Spanish Government along lines favourable to Moscow. Secondly, he personally ran from Spain the whole of the overseas network of the GRU. And finally, he did not forget his most important task. The head of the Foreign Directorate of the NKVD, Slutski, was also in Spain, also personally supervising the activities of all his overseas agents. In all probability Slutski was aware that Berzin and the GRU had some connection with the mysterious disappearance of NKVD illegals. Evidence has been preserved which shows that Slutski and Berzin had clashes practically every day in Spain. However, at the same time, the intelligence chief of the NKVD was finding himself increasingly subject to the chief of Soviet military intelligence. At the end of September 1936 the NKVD chief, Yagoda, was dismissed from his post and the secretary of the Central Committee of the Party, Ezhov, was appointed in his place. Ezhov himself began a most cruel purge of the NKVD - and he no longer required the assistance of the GRU. More than 3,000 Tchekists were shot on Ezhov's orders, including Yagoda and Slutski themselves. It is interesting to note that Yagoda's death followed an open trial, but Slutski was murdered secretly, in the same way as his best illegal residents had been executed previously. After the Party, in the person of Ezhov and with the help of the GRU, had purged the NKVD, the time came for the Army to be dealt with. This purge began with the liquidation of the general staff - and the complete destruction of the GRU. Among those military leaders first executed together with Marshal Tukhachevski were army commanders Yakir and Uboreevich and Corps Commander Putna, the Soviet military attache in London. As might be expected, all military attaches are GRU officers; but Putna was not simply a military attache. Until his appointment to London he had been deputy chief of the GRU. His execution served as an extra excuse for the NKVD to carry out a special purge in the ranks of the GRU. Hatred which had been collecting for many years at last came out into the open. In the course of the purge first the acting head of the GRU, Uritski, was arrested and shot, and after him all the rest. The NKVD and GRU now exchanged roles. NKVD men with special powers went around the world destroying both GRU illegals and also those intelligence officers of the GRU and NKVD who had refused to return to the Soviet Union and certain destruction. In the course of the 1937 purge the GRU was completely destroyed-even down to the lavatory attendants and cooks on its payroll. Berzin, back from Spain, had to re-create the GRU from scratch.
By the autumn of 1937, by a special effort of the Comintern -particularly in Spain with the help and coercion of the International Brigades - the GRU had somewhat recovered its strength. A year later Soviet military intelligence had returned to its stormy activities. But in the summer of 1938, in the course of a second wave of terror, the GRU was again destroyed, losing its entire strength. This time Berzin himself, one of the cleverest and most successful leaders the GRU has had, was among the victims.