Aim: To substantiate the strategic role of the resocialisation of veterans with PTSD as a critical factor in the security of Ukraine and the EU; to analyse the clinical specificity of contemporary combat-related disorders; and to demonstrate the necessity of implementing inclusive governance models of rehabilitation at the community level to prevent cross-border social risks. Materials and Methods: A comprehensive approach was applied, including statistical, comparative, and clinical-diagnostic analyses. The source base consisted of a secondary analysis of data from international organisations (GPI, GLOBSEC, UNODC) and departmental statistics for the period 2008–2025. A systematic selection of publications was carried out in the Web of Science Core Collection, Google Scholar, and the electronic catalogues of the V. I. Vernadskyi National Library of Ukraine using the keywords: resocialisation, veterans, PTSD. Of 68 identified sources (including 34 articles), 22 studies that fully met the criteria of scientific validity were included in the final analysis. Conclusions: It has been demonstrated that Ukraine’s resocialisation policy represents a unique precedent for EU and NATO countries. It shows that the stability of the veteran community serves as an instrument for mitigating cross-border crime and social destabilisation in the region. Public administration bodies and local self-government play a decisive role in creating multi-level interventions. The transition from a punitive to a rehabilitative model proves its economic efficiency. Clinical advances by Ukrainian physicians in PTSD are fundamental for the European healthcare system, particularly in the context of rehabilitating foreign volunteers and preparing medical professionals for the challenges of modern conflicts.