The Virginia Modeling Analysis & Simulation Center (VMASC) has implemented a prototypical implementation for XML based data mediation services to translate legacy XML schemas into XML schemas based on the tag set registered in the coalition namespace of the DoD XML Repository. This tag set is generated from the Command and Control Information Exchange Data Model (C2IEDM), and represents the mutual consensus of the Multilateral Interoperability Programme (MIP) partners. MIP enables interoperation among operational Command and Control (C2) systems of NATO forces. Being able to exchange simulation information based on C2IEDM enables the exchange of data with operational systems (C2 and M&S Coupling). The benefit of the VMASC proposal is that legacy systems are required only to provide information exchange interfaces based on XML, as the adaptation of such systems is done by configuring the layers of the recommended architecture. In addition, a complete open standards and open source based web service set for data storage and retrieval based on C2IEDM structures including data visualization was implemented. The paper will describe the core ideas, the architecture, the configuration of the layers, and the prototypical implementation.