Abstract: Military model is the integration and representation of military knowledge. The main task of military simulation is either to verify the exist knowledge or to produce new knowledge about military activities. By computational experiment, it is able to gain new knowledge about the parallel military system, which is able to enrich the origin knowledge system. Combined with parallel system technology, it's possible to study the evolution process of military knowledge, which is able to help us understand the complexity of military system. From the perspective of knowledge engineering, the processes of knowledge integration, representation and evolution were studied, and some key technologies were discussed, including ontology modeling, the measurement of parallel and the design of parallel battlefield.

Key words: parallel military system, knowledge engineering, parallel battlefield, ontology modeling