Abstract: The complexity of combat system is mostly considered, in order to quantify the spanning boundary degree of military tasks in leveraging complexity of war, a complexity concept of command &coordination of tasks is proposed and the quantification method is designed. First, the command network is embedded into a poincar佴 disk. The geodesic distance in a poincar佴 disk between the executive subject of task and its neighboring subject is calculated. Second, the coordination distance between the task and its neighboring nodes is calculated by the centrality of network weighted degree. The deduction confrontation data in real war game are used to divide the whole confrontation into four phases to verify the proposed method. The rationality and validity of the method are proved.