The main purpose of this study was to develop an ideal model to take good care of mentally ill soldiers and strengthen the fighting power of the Korean military. This paper is based on the author’s life-long personal experience on education, research, and clinical services in the field of psychiatry and military psychiatry. The final ideal model is the “Model of Everything.” This model is the integration of the bio-psycho-socio-spiritual model and positive psychiatry. This model can be exemplified as follows: objects, bio-psycho-socio-spiritual aspects; time, past-present-future; space, I-family-society-nation-world-cosmos; attitudes, positive-historical-scientific-artistic-philosophical. This model can be an ideal model for mentally ill soldiers because it helps to take care of them as a “whole, entire person” rather than the diseases or disorders themselves. The ‘Model of Everything’ means that it can be applied to not only psychiatry but also to all academic fields, including politics, economics, social sciences, natural sciences, and culturology.