The Citarum River is a strategic river that has a vital function for people's lives in West Java, but the pollution and damage that has made the Citarum River a polluted river in the world. Several previous revitalization programs for more than 10 years failed, until in 2018 the government involved the Indonesian National Army (TNI) through the Citarum Harum program. This research is expected to provide knowledge for the community and a reference for effective policies for the government. This study aims to examine the involvement of the TNI through military operations other than war (OMSP) in the Citarum Harum Program in the Regency of Karawang-Indonesia. This research uses a qualitative approach, primary data is obtained through direct observation and in-depth interviews, while secondary data is obtained from relevant research documents and documents, data analysis using Nvivo 12 Pro. The results showed that the involvement of the TNI in the Citarum Harum program had a significant impact on the success of the program. In its realization, the TNI dominates various activities of actors including the government. The presence of TNI encourages active participation and the establishment of motivation manifested in the changing mindset of the community and the industry. The TNI resounding image and simultaneous decisive action foster the obedience and commitment of the actors in collaboration.