Foundation model technology has brought unprecedented changes to the military field due to its powerful capabilities in language understanding, logical reasoning, and text generation. This paper reviews the current development status of typical multimodal large models and related technologies of large language models. Based on typical military foundation model platforms, applications in command and control, cognitive warfare, staff specialty, logistics and equipment support are designed. Then, challenges of military foundation models are discussed. Finally, the key common technologies in military applications are summarized. Hopefully, our work can be beneficial for military application.