Unique experiences of rescuers have been compiled in this collective monograph, which focuses on the organisation of Civil Defence and the protection of the population amidst hostilities. All the materials presented herein are the outcomes of collecting, processing, and analysing real-life practical interventions by various rescue services and university personnel operating within conflict zones in Ukraine. Weaknesses have been scrutinised, accompanied by recommendations to enhance the organisational aspects of certain activities. This monograph is intended for a broad audience of Civil Defence specialists worldwide, united by a commitment to ensuring the safety of their fellow citizens.