(the 'Cockfosters Cage') for captured German generals and staff officers. They were treated hospitably, provided with special rations of whisky and allowed regular walks on the grounds. The hidden microphones and listening devices allowed the British military (MI19) to gather important information and an intimate insight into the minds of the German military elite. An example of the intelligence gained from Trent Park is the existence and location of the German rocket development at Peenemünde Army Research Center, when General von Thoma discussed what he had seen there. This led to the area being targeted for a heavy bomber attack by the RAF. Intelligence was also gained on war crimes, political views, and the resistance in Germany that led to the attempt to assassinate Hitler. Eighty-four generals and a number of lower-ranking staff officers were brought to Trent Park. More than 1,300 protocols were written by the time the war ended; a selection of these was published in English in 2007 under the title Tapping Hitler's Generals. Selected transcripts were dramatised in the 2008 History Channel 5-part series The Wehrmacht. In the episode The Crimes, General Dietrich von Choltitz is quoted as saying in October 1944: "We all share the guilt. We went along with everything, and we half-took the Nazis seriously, instead of saying 'to hell with you and your stupid nonsense'. I misled my soldiers into believing this rubbish. I feel utterly ashamed of myself. Perhaps we bear even more guilt than these uneducated animals." (This in apparent reference to Hitler and his supporting Nazi Party members.) The transcripts from Trent Park are also included in the 2011 book Soldaten – On Fighting, Killing, and Dying: The Secret Second World War Tapes of German POWs by historian Sönke Neitzel and social psychologist Harald Welzer. In its review of the book, Der Spiegel reports: <blockquote>Many Wehrmacht soldiers became witnesses to the Holocaust because they happened to be present or were invited to take part in a mass shooting. In one cell conversation, army General Edwin Graf von Rothkirch und Trach talks about his time in the Polish town of Kutno: It takes some sense of routine to be able to make such an offer. The fact that the people involved did not try to keep their activities a secret demonstrates how much the perpetrators took for granted the "mass shootings of Jews", as one of the POWs in Trent