A simulation system capable of supporting human factors experiments in the development of military training devices is described. The first phase of the study consisted of (1) a review of tasks performed by the operators of different types of military simulation systems, (2) an analysis of problems experienced in the development of devices for such training tasks, and (3) the identification of design areas in which experimentation is required. The second phase of the project resulted in the formulation of design recommendations and a five-year implementation plan to permit system procurement in five relatively discrete incremental modules. Each of the five modules can be employed independently, and each can also be integrated with the preceding module to provide additional, supplemental functions. Procurement of all five modules will provide for the total capability necessary for the support of future human factor experiments in military training. (Author/DGC)