Naturally, the question arises of whether the POWs might have known they were being listened in on. That would cast doubt upon the authenticity of the information they provide. They must have at least suspected that the British and Americans would want to tap into what they knew, and they could have consciously spread disinformation. In fact, Allied methods of intelligence gathering were hardly unknown in Germany. A POW named Franz von Werra, who had been briefly interned at Trent Park, managed to escape British custody and reported back in detail about English interrogation techniques.906 On June 11, 1941, the German Military Intelligence Service issued guidelines about how Wehrmacht soldiers were to behave if captured by the British. They included warnings about potential spies in German uniform and concealed microphones. The authors of the guidelines explicitly stressed that the enemy had repeatedly obtained valuable information via such channels.907 In November 1943, as part of the first exchange of POWs, Lieutenant Commander Schilling returned to Germany and briefed his superiors about his and others’ experiences with British interrogation. In this way, the Wehrmacht supreme command learned the names of a number of spies who were working with the British. They also heard that the generals in Trent Park “were too open and cavalier in their mutual conversations, neglecting the need for caution.” Again, it was stressed that German soldiers should beware of spies and covert surveillance should they happen to be captured.908
The protocols, however, strongly suggest that most German POWs forgot all about these warnings and prattled on heedlessly with their comrades about their military experiences. For instance, there are repeated references in conversations between NCOs and ordinary soldiers to the Nazi propaganda film
We must recall that the Allies used a number of clever tricks to tap the knowledge of their enemy. German exiles and cooperative POWs were used to steer conversations,914 and POWs of the same rank but different divisions and units were housed together. These methods proved very successful. Submarine navigators from various vessels swapped stories about what they had experienced, and Luftwaffe officers recalled battles and compared notes about the technical details of their aircraft. Soldiers were often transferred to the camps only a few days after they had been captured, and many were still in a state of shock from the often dramatic circumstances in which they had been taken prisoner. That increased their need to talk. After all, many had narrowly escaped being killed. There was no difference in the behavior of officers and ordinary soldiers on this score.
The interrogation reports from Fort Hunt demonstrate just how cooperative many POWs were. A surprising number of them simply told everything they knew in hope of getting better treatment or—far more rarely—to damage the Nazi regime.915 Some dictated data like exact measurements to the interrogating officers; others made sketches of military facilities in Germany or construction plans for weaponry. Most of the POWs hesitated to cooperate to that extent, but only censored themselves with reference to tactical and technical specifics. On questions of politics, conditions in Germany, or morale in the Wehrmacht, they were entirely forthcoming. These men were equally open when conversing with one another. To the delight of Allied intelligence officers, the only taboo was talking about one’s own feelings.