The purpose of this research is to increase the strength and capability of the Integrated Fleet Weapon System by procuring the main weapon system (defense equipment) with the latest technology. Meanwhile, increasing the professionalism of soldiers by carrying out education and training. The Education of the Naval Command and Staff School is directed at educating and strengthening the middle officers of the Indonesian Navy and the Indonesian National Armed Forces. The analysis method is carried out through explanatory research, using PLS/SEM applications. Concepts and problems under study look at causality, then explain the variables causing the problem under study. The research sample was 130 leaders and staff of the Naval Command and Staff School. The results of this study transactional leadership, strategy planning affect organizational performance. Knowledge management has an effect on organizational performance. Likewise transactional leadership, strategy planning has an effect on organizational performance which is mediated by knowledge management at the Naval Staff and Command School. Theoretical implications with the existence of transactional leadership, strategy planning through increasing its dimensions will be able to improve the organizational performance of the Naval Staff School and Command so that it can increase the trust and loyalty of related parties. The managerial implication that needs to be implemented is that leadership, planning and strategy are very influential on organizational performance, so increasing transactional and strategic leadership through improving every dimension of policy and strategy must be a priority to be able to maintain the organizational performance of the Naval Staff and Command School.