The aim of this article was to explore the stresses of war on the human soul, utilizing empirical research on the experiences and contributions of military chaplains (MCs) in the war in Ukraine. The concept of the human soul was examined through a theoretical framework inspired by Mead's notions of the I and the Me. The I represented the unique, creative, and transcendent aspects of a person, while the Me reflected the cultural and social constructs that integrated individuals into broader socio-cultural contexts. This interplay between the I and the Me formed the basis for understanding the human soul as both transcending culture and deeply embedded within it. The empirical material was derived from a qualitative interview study conducted in 2024 with 12 Ukrainian MCs. Data analysis employed thematic coding using an inductive approach, resulting in the identification of key themes related to the moral, ethical, and character dimensions of military service. An abductive approach was employed in the analysis, which allowed concepts to cross-fertilize the key themes. The findings revealed that war disrupted the social structures, norms, and values that underpin peaceful societies, profoundly impacting the mental health of military personnel. MCs played a crucial role in mitigating these effects by fostering moral coherence, upholding ethical standards of the Me, and safeguarding the human Me of soldiers in the face of dehumanizing wartime conditions. Their work was deeply rooted in cultural and religious traditions, enabling them to address existential and moral issues that transcended the scope of conventional medical interventions. By offering confidential pastoral care, MCs created spaces for military personnel to process and interpret their experiences, reconnect with their moral and spiritual identities, or Me's, and maintain operational effectiveness. This pastoral, culturally grounded approach complemented—and, in some cases, surpassed—medical models in addressing the complex challenges of existential mental health during war. The article underscored the need for a more holistic understanding of war-related mental health challenges, emphasizing the importance of integrating cultural, moral, and religious/spiritual dimensions into care frameworks.