The full-scale war of Russia against Ukraine made the Ukrainian state and society face challenges that any other European country had never met in the XXI century. In the fight against external aggressors, both state and civil society in Ukraine, which used to be opponents rather than partners, began to work together to defend the people and the condition successfully. The article studies some current problems and proposes ways of improving the work of civil society institutions in terms of wartime. This interaction between civil society and the authorities brings all functional needs and resources together to help the population during a full-scale war. The authorities are aware that the position and role of civil society are critical and weighty for defeating the common enemy.