Tweedledum
RAF officer George Marsh, who had worked in a psychiatric hospital prior to the war and is now a medical orderly, works out that if he pretends that he is mentally ill, he will be repatriated and returned to England. Ullmann, suspecting a deceit, assigns sympathetic Private Hartwig to befriend him, since Hartwig has a brother with a mental illness and is as aware of the genuine signs as Marsh is. Ultimately Marsh is indeed sent home but a letter received by Preston reveals that he got to live the part rather too well for his own sanity.