Posttraumatic stress disorder (PTSD) is classified as an anxiety disorder in psychiatry. In the Republic of Croatia, the official classification is ICD-10. According to this classification, PTSD occurs after exposure to a traumatic stressor in which a person has been potentially or directly threatened with death, injury, or impaired personal integrity. PTSD greatly affects the general health of an individual and reduces his functionality in the family and in the social and work plan. In the Republic of Croatia, Homeland War veterans are the most vulnerable group for the development of this anxiety disorder due to the stress experienced during the war. A high prevalence rate was registered among veterans, former detainees, exiles and refugees, and in the families of missing persons. Due to the different horrors experienced, the treatment needs to be adapted to the individual by combining psychotherapeutic, psychopharmacological and psychosocial methods. In the treatment of veterans with PTSD, the role of the bachelor of nursing is important and the intervention is carried out independently and together with the rest of the medical team in order to improve the patient's health. The aim of this paper is to present the historical development of the concept of PTSD and its classification, define the term PTSD, present the clinical picture, show the impact of the Homeland War on the incidence of PTSD in Croatia, describe health care and the role and interventions of bachelor nursing. patients with PTSD.