The thesis has the objective of developing a study concerning trauma and its effects under a dynamic perspective and not merely economical, as it has been the case of many studies in the field of the psychoanalysis since now, taking as reference the clinical observation in psychoanalytic services rendered to the Military Policemen in the city of Rio de Janeiro. Besides the notions of Schreck (fright) and of an excess of energy invasion presented by Freud in 1920 to explain the trauma, we will include in this research the role of the superego, whose imposition of a masochist enjoyment at the service of the death drive can lead to the compulsion to repetition of the trauma. If we understand trauma as the shattering of the sexual fantasies, it causes the subjective references to dismount, a process that leads to the sensation of psychic annihilation. That is the reason of the idea that a strange body remains in the psyche. Identified with the dead, a position that generates a depressive state that endangers the subject s survival, he can fall in a melancholic state or even in a paranoid state, without being a psychotic; because the action of the superego of punishing and trampling on the ego, taking him to complete the inconcluded action (death), can be attributed to a pursuing Other, when, in reality, this threat is internal, as it will be shown in some clinical cases.