The study examines changes in the environmental behaviour of Ukrainians under the influence of military operations. One of the key predictors of such changes is the specific features of community identification of Ukrainians in the face of threat. The critical criterion of pro-ecological behaviour is considered to be the environmental responsibility of Ukrainians. The study involves several stages of qualitative and quantitative data collection. In the process of data analysis, such qualitative methods as content and thematic analysis of narratives are also used. Quantitative data analysis is performed using regression analysis, multivariate analysis of variance, and correlation analysis. Some components of environmental responsibility, such as activity, emotion, and value, were identified. During the quantitative data collection stage, the role of civil, territorial, and professional identity as predictors of increasing environmental responsibility of Ukrainians is recorded. In general, the growing role of civil identity as a consolidating factor for the formation of an integrated identity that can withstand threats, including environmental ones, is interpreted. Strengthening the emotional component affects the sense of environmental threat at the subjective level and contributes to the awareness of the need to preserve the environmental well-being of the state. Strengthening the manifestation of European identity has a positive impact on the integration of pro-ecological European values. Identifying the interaction of professional and civil identities can serve as an indicator of the strategic importance of Ukraine as an environment for work and personal realisation