This study investigates the challenges of language support in warzone cultural tourism in Kinmen and Matsu, focusing on the implementation of Chinese and Japanese guided tours and their impact on tourist satisfaction. Based on questionnaire surveys conducted with Japanese and Taiwanese tourists, the findings reveal that while Kinmen and Matsu hold rich potential for preserving and interpreting war-related cultural heritage, significant gaps exist in language support services. Japanese tourists reported limited availability of Japanese-language tours, difficulty accessing information, and insufficient depth in cultural interpretation. Compared to Taiwanese tourists, they also demonstrated higher expectations for language communication and guide interaction. This study proposes strengthening the linguistic and cultural training of Japanese-language guides while encouraging local residents to participate in developing guide content. It also promotes a locally grounded and inclusive language support strategy. This approach is expected to enable battlefield heritage to serve as a medium for peace education and intercultural understanding while contributing to the sustainable use of tourism resources.