At this juncture we must again refer to the previously mentioned circumstance that in our patients the anxiety as regards killing is of a similar significance to that of dying. The symptoms in part are only comprehensible in this sense. The case of a man who in the field suffered from a relapse of a neurosis which he had had six years previously is especially instructive. At that time he was taken with a tremor of his arm which arose in connection with a dream in which he murdered someone; a hand-to-hand fight in the field caused the old symptom to reappear. Hysterical convulsive attacks are not only produced through dangerous situations, terror, etc., but not infrequently an act of aggression which he has failed to carry out is expressed in them. Such an attack is especially often associated with an exchange of words with his superiors; the suppressed impulse to forcible activity finds in the expression its motor discharge. The complete instability of many war neurotics, their disconcerting depression, their propensity to thoughts of death, find a further explanation in a particular effect of the trauma. Many of the neurotically disposed persons, up to the moment when the trauma upsets them, have supported themselves only through an illusion connected with their narcissism, namely, through the belief in their immortality and invulnerability. The effect of an explosion, a wound, or things of a like nature suddenly destroys this belief. The narcissistic security gives way to a feeling of powerlessness and the neurosis sets in. To what an extent the regression can go is shown in those cases, described also in the literature, in which the patients display the conduct of little children. One of my patients who was previously neurotic was thrown into this kind of condition through the terrifying effect of a mine explosion. For a long time he behaved like a terrified little child. For many weeks he could only reply to all questions about his trouble with the two words, “Mine bombs”. He had therefore gone back to the mode of expression of a child hardly two years old.