Abstract: A generator for providing highly interactive, immersive training and mission rehearsal scenarios for war fighters and leaders on the job is provided. Through natural language understanding, the automation of such scenarios may be enabled and quickly created to ensure effectiveness, consistency, completeness and relevance. New tactical simulations may be added to the system by writing software adapters to down-translate from an abstract scenario model to the specific tactical simulation and its delivery platform. Finally, this same approach of interpreting written problem or task specifications may be extended to instruction in non-military domains that also leverage system or device simulations.