The new German commandant, sergeant Rudi Trepte, quickly imposed a more rigid regime, with prisoners confined to their rooms in their free time, and visits were restricted to once a month. Radomski was an "
Old Fighter" of the
Nazi Party, and one of the early companions of the feared
security chief
Reinhard Heydrich in
Hamburg. However, he was considered as brutal even by his fellow SS officers. His personal file called him "primitive", and as commander of the
Syrets concentration camp near
Kiev he led a terror regime, ordering severe punishments for the smallest infractions, and often personally shooting or whipping the inmates, a habit he carried over at Haidari. An account by an eyewitness, Constantine Vatikiotis, who was arrested on 26 October 1943, describes Radomski personally executing a Jewish prisoner called Levy, in front of the other prisoners, "for attempting to escape on the day of his arrest". This execution was to serve not only as a warning to the others, but, according to post-war psychological research, to "put the inmates in constant fear of their lives". Vatikiotis estimated that in the few months he was at Haidari some 2,000 people were executed. Fischer reversed his predecessor's policies: instead of Radomski's brutal treatment, he relied on informants and spies among the prisoners. Despite the somewhat relaxed atmosphere, Fischer also oversaw the period of most activity on the camp: during spring and summer 1944, the Germans engaged in constant
razzias, blockades and mass arrests in Athens, and the camp's inmate population peaking at several thousands in August, barely two months before Liberation. German reprisal policies also saw a sharp rise in executions, most famously the case of the 200 Communists who were
executed on 1 May 1944 at
Kaisariani as a retaliation for the ambush and murder, by
ELAS partisans, of German General Franz Krech at
Molaoi in
Laconia. In March, the Germans also imprisoned several prominent politicians, whom they suspected of contacts with the British. These included the former
Prime Ministers Georgios Kaphantaris,
Themistoklis Sophoulis and
Stylianos Gonatas, all leaders of the pre-war
Liberal Party. The Athens
SiPo/
SD chief,
Walter Blume, intended to execute them, along with other public figures, as the German army would withdraw, leaving the country in turmoil. In the end, Blume's "Chaos Thesis" was dismissed by his superiors, and the politicians were released in early September. Blume was arrested and convicted at the
Einsatzgruppen trial but released in 1955; he died in 1974.
Jews at Haidari on 25 March 1944. Almost all of the Jews deported from the former Italian zone were killed within days of their arrival at
Auschwitz-Birkenau in April. Even though the Germans had already deported the Jews of
Thessaloniki, which lay under their jurisdiction since 1941, they did not immediately move against the Jews of the formerly Italian zone. The first Jews arrived at Haidari on 4 December 1943, and were isolated in the basement of Block 3, but their number increased only slowly. The first mass arrivals came about in late March 1944, as the Germans moved simultaneously against Jewish communities throughout Greece. In these operations, Haidari served as the central transit camp to the extermination camps in Central Europe: on 23 March, about 700 to 1,000 members of the Athens community were rounded up and taken to Haidari, followed days later by 614 Jews from Epirus and Western Greece, including Jews with foreign passports. In early June, 1,850 Jews from the
Ionian Islands arrived, and as late as 1 August, 1,700 Jews from
Rhodes and the
Dodecanese. All these were transported to
Auschwitz. == Post-war history and commemoration ==