Article is devoted to the clinical description of fighting posttraumatic stress disorder, and also questions of their early diagnostics in the conditions of military unit. The characteristics of the basic clinical variants of posttraumatic stress disorder and postfighting personal changes at combatants are resulted. Concept substantive provisions "combatant accentuation" is stated the person. It is underlined necessity of the earliest rendering of the mediko-psychological (psychotherapeutic) help to the military men who have transferred fighting stress.