Modern warfare is characterized by "multi-domain integration, information dominance, and fast operational tempo," placing higher demands on battlefield situational awareness and precise command. Amid the wave of intelligent transformation in military training and operational command, the "digital twin battlefield" has become the core carrier of all-domain joint operations. Leveraging its self-developed SDC ME digital twin visualization platform, Sifang Weiye has built the Battlefield Digital Sandbox. Through a "digital twin + IoT perception" technical framework, it constructs an extensible and iterable intelligent operational platform that fully supports the core requirements of modern warfare and resolves the bottlenecks of traditional military training and operations.