were broadcast to Germany and various pieces of agent paraphernalia such as code books and wireless receivers were allowed to fall into the hands of the German authorities. In Austria a resistance group formed around Kaplan Heinrich Maier. The Maier group was informed very early about the mass murder of Jews through its contacts with the Semperit factory near Auschwitz. SOE was in contact with this resistance group through its colleague G. E. R. Gedye in 1943, but was not convinced of the reliability of the contact and did not cooperate due to security concerns. The Netherlands Section N of SOE ran operations in the Netherlands. They committed some of SOE's worst blunders in security, which allowed the Germans to capture many agents and much sabotage material, in what the Germans called the 'Englandspiel'. SOE ignored the absence of security checks in radio transmissions, and other warnings that the Germans were running the supposed resistance networks. A total of 50 agents were caught by the Germans and brought to Camp Haaren in the South of the Netherlands. Five captured men managed to escape from the camp. Two of them, Pieter Dourlein and Ben Ubbink, escaped on 29 August 1943 and found their way to Switzerland. There, the Netherlands Embassy sent messages over their controlled sets to England that SOE Netherlands was compromised. SOE set up new elaborate networks, which continued to operate until the Netherlands were liberated at the end of the war. In September 1944, as allied military forces were advancing into the Netherlands, the remaining captured SOE agents were taken by the Germans from Camp Haaren to Mauthausen concentration camp and executed. From September 1944 to April 1945, eight Jedburgh teams were also active in the Netherlands. The first team, code named "Dudley" was parachuted into the east of the Netherlands one week before Operation Market Garden. The next four teams were attached to the Airborne forces that carried out Market Garden. After the failure of Market Garden, one Jedburgh team trained (former) resistance men in the liberated South of the Netherlands. In April 1945 the last two Dutch Jedburgh teams became operational. One team code named "Gambling", was a combined Jedburgh/Special Air Service (SAS) group that was dropped into the centre of the Netherlands to assist the Allied advance. The last team was parachuted into the Northern Netherlands as part of SAS operation "Amherst". Despite the fact