All the experiences here communicated speak unanimously in the sense that the war neuroses are not to be understood without taking the sexuality into consideration. This view receives a valuable confirmation by means of the mental disturbances observed in the war, which—like mental troubles in general—very often more easily manifest the latent content of their ideas than the neuroses. The mental disturbances which have broken out in the field, as other observers have confirmed, are associated only in a trifling part with the formation of delusions. However, if there is a delusion then it has even a manifest sexual content. In the cases I have seen the delusions are partly of jealousy, partly of homosexual persecution by comrades. I might mention the paranoid illness of a soldier which broke out when he, after long service in the field, went home on furlough and turned out to be impotent with his wife. A very transparent symbolism and other signs pointed with certainty to the significance of homosexual components as the fundamental cause of the delusion. Another man had the delusion of being, during sleep, infected with syphilis in the hospital by his comrades, the origin of the delusion was here also the result of imperfectly repressed homosexuality. In this connection I should like to mention another remarkable case. In 1915 when I was acting at a surgical station a man was treated there for a gunshot wound of the penis. The operation, which was carried out by a well known surgeon, was quite successful. Two years later the same patient came to my psychiatric station. The man who was previously unaffected psychically now showed a paranoid mental disturbance. On questioning him it appeared that in consequence of the wound there existed entire genital anaesthesia. Also here the psychosis appeared to stand in close connection with the cessation of genital manliness.