The need and a possible approach for a general object correlation scheme for use in the Department of Defense Command and Control and Modeling and Simulation systems is discussed. The definition of the Defense Information Infrastructure and adoption of the High Level Architecture require information exchange in the form of software objects. The information required by and transmitted from different levels of command differs in the level of detail. Similarly, simulations performed at different levels of abstraction require descriptions of the battle space at different level of detail. In such object based systems, if unambiguous communication or interoperability of simulations at various levels of abstraction are to become a reality, a scheme is required which will ensure the consistent and accurate mapping of objects at one level of detail with objects at the next. The alternative to this scheme is the requirement that all systems possess the ability to properly receive and interpret descriptions of the battle space at all levels of detail. The computational overhead and communications bandwidth required under such circumstances may seriously degrade performance and compromise functional requirements. These issues will be discussed in detail and the functional requirements for an object correlation scheme will be given. The framework for such a correlation scheme and some correlation approaches will be presented. Advantages of testing such a scheme in the realm of modeling and simulation prior to applying it to command and control systems will be given.