Cross community and interservice Live-Synthetic (Virtual-Constructive-Gaming) initiatives often fail due to the lack of formalized governance, as stated by Frank DiGiovanni, Director, Force Readiness and Training in the Office of the Deputy Assistant Secretary of Defense (Readiness), during the 2014 Interservice/Industry Training, Simulation and Education Conference (I/ITSEC). In March 2014, the US Army initiated a cross community Research and Development (R&D) initiative to investigate the feasibility of establishing a common Live-Synthetic approach for the Training and Test & Evaluation (T&E) communities, called the Live-Synthetic Training and Test & Evaluation Enterprise Architecture (LS TTE EA). This paper reports on the progress of this initiative in establishing the objective framework for the enterprise architecture (EA) that includes: (1) the initial governance approach, (2) the business architecture, and (3) the reference architecture. The governance approach provides agreed-upon practices and interactions for the formalized collaboration between organizations to build and deploy services that are useful and sustainable for the EA. The framework for the development and evolution of the governance approach for the LS TTE EA is outlined, including how the governance approach is being applied to current prototyping activities. The business architecture provides a common understanding to align Army strategic objectives and tactical Training and T&E demands. Business architecture artifacts and the results of a quick-look cost benefit analysis are discussed. The reference architecture is the authoritative source of information that guides the implementation of EA solutions. The reference architecture layers and initial documentation in Department of Defense Architecture Framework (DoDAF) viewpoints are shown. Finally, the paper discusses the way forward for application of the EA objective framework to the Army’s Integrated Training Environment (ITE), Integrated Live-Virtual-Constructive Test Environment (ILTE), and Synthetic Training Environment (STE), and applicability to the Defense Training Environment (DTE).