Design thinking is an attractive method of thinking, in which perfect proficiency based on analytic thinking and creativity rooted in intuitive thinking interact with each other, eventually finding a balance. Design thinking is also an innovative business technique that has been discussed and applied in various fields, including business, administration, and education, and has been a major topic in the U. S. over the last decade. In this study, the “Design Thinking Process Model” was implemented to solve problems in the Republic of Korea (ROK) Air Force Apparel Supplying System. Even though after establishing its system in 2007, the Air Force as the first among the three services in the ROK military made continuous efforts by introducing advanced commercial techniques, clients continuously demanded improvements of the system. It was obvious that the Air Force Apparel Supplying System reached a point where the administrator-centered (analytical thinking) management was insufficient to solve the emerging problems. Thus, the Design Thinking Process Model was used to meet clients’ demands for improvement by balancing analytic thinking and intuitive thinking within the system. The Design Thinking Process Model consists of 12 steps within five procedures (Discovery - Interpretation - Ideation - Experimentation - Evolution). Centered around the project team, the methodologies were implemented in each step and the results of the study can be summarized as follows. In the first phase (Discovery), problem recognition and focus group interview allowed to study the nature of client demand more deeply. In the second phase (Interpretation), conversations with participants and the search for meanings unveiled an interesting perspective, the nature of which could be meaningfully interpreted as “clients want a new system that fits with their current life pattern.” In the third phase (Ideation), discussing ways to capture opportunities yielded various ideas, and the feasibility of each idea was assessed. In the fourth phase (Experimentation), creative solutions that would improve the apparel supplying system were produced through cooperation in designing a blueprint for a prototype that would turn the generated ideas into reality (Internet and mobile application for the apparel supporting system). The study was completed after making a policy proposal to the logistics branch of the Air Force headquarters. Thus, this study addressed clients' inconvenience and suggested creative solutions to a military organization, using design thinking to propose directions that could bring innovative improvement for the air force apparel supporting system.