Heinrich Rau - Imprisonment, International Brigades, World War II

Imprisonment, International Brigades, World War II

After Hitler's rise to power in January 1933 and the subsequent suppression of the KPD, Rau became a Central Committee's party instructor for southwest Germany and was active in building an underground party organisation there. On 23 May 1933 Rau was arrested and on 11 December 1934 convicted, together with Bernhard Bästlein, for "preparations to commit high treason" by the People's Court of Germany. He was sentenced to two years imprisonment. After his release from custody, he emigrated to the USSR in August 1935, via Czechoslovakia, and became a deputy chairman of the International Agrarian Institute in Moscow.

After the outbreak of the Spanish Civil War and following the formation of the International Brigades, Rau attended a school for military commanders in Ryazan (USSR), and subsequently went to Spain. After his arrival in April 1937, he joined the XI International Brigade and participated in the civil war as political commissar, beginning in May 1937, then as chief of staff and finally commander of the brigade, until March 1938, when he was injured. Although the brigade achieved some temporary successes during these months, Francisco Franco's troops were already on the road to victory. Rau's brigade saw combat in the battles of Brunete, Belchite, Teruel and the Aragon Offensive, where Rau was wounded.

When Rau took charge of the XI Brigade, he might have been at odds with his predecessor, Richard Staimer, the future son-in-law of KPD leader Wilhelm Pieck. This was the time of the Great Purge which had its echos in Spain, and it could be perilous to have powerful enemies. André Marty, the Stalinist chief commissar of the International Brigades based at Albacete, was also an executor of the Great Purge in Spain. Following Rau's injury, Marty managed to imprison him under a pretext for a brief time. A report, written in Moscow in 1940, described Rau as a "political criminal", who had had contact with the Spanish anarchists and members of the Workers' Party of Marxist Unification (POUM), which was demonized as "Trotskyist". These were serious allegations in this time, when accusations of Trotskyism frequently led to a death sentence if the accused was within reach of the authorities.

It seems, however, that Rau also had influential friends. He was released from prison and expelled from Spain. He moved to France in May 1938. There, he was in charge of the emergency committee of the German and Austrian Spain fighters and member of the KPD country leadership in Paris until 1939. At the beginning of 1939 Rau crossed the border to Spain again and subsequently led, together with Ludwig Renn, the remainders of the XI Brigade. Together with other remaining international units – now combined in the "Agrupación Internacional" – they fought on Spain's northern border after the fall of Barcelona, protecting the stream of refugees escaping to France. Thus they enabled the escape of perhaps some 470,000 civilians and soldiers.

Rau was arrested by the French authorities in September 1939 and sent to Camp Vernet, an internment centre in France, and in November 1941 to a secret prison in Castres. In June 1942, he was handed over to the Gestapo by the Vichy regime and was held until March 1943 in the Gestapo prison in the Prince Albrecht Street. Afterwards he was sent to the Mauthausen Concentration Camp, where he remained until May 1945, when he participated in a camp rebellion as one of the organisers of a secret military camp organisation.