The purpose of this study lies in figuring out the factors of how soldiers' digital games experiences make influence on combat power improvement of the military.. For this study, based on the technology acceptance model, we have analyzed how causation is formed between self-efficacy and the collective-efficacy, perceived usefulness, perceived ease of use and the behavior intention. As a result of validating structure equation modeling targeting the sample of 101 soldiers, self-efficacy on digital game has a significant impact on perceived usefulness, perceived ease of use and the behavior intention. This result implies that soldiers’ digital game experiences have compelling relations on improving combat power of individual, which is a component of the military combat power, and the members of the organization. This study’s result offers an insight for implementing and utilizing small unit war game cyber combat system, which is based on digital games related to improving the military combat power in the future