In the USA the Director for Test Systems Engineering and Evaluation (DTSE&E) commissioned in 1995 a one-year study to assess the effectiveness of the use of M&S in weapon systems acquisition and support processes.
The DTSE&E study developed an approach to acquisition which was named simulation-based acquisition (SBA).
DTSE&E was disestablished by the US Secretary of Defense on 7 June 1999; some functions were transferred to the Director, Operational Test and Evaluation (DOT&E).
References
Simulation-based acquisition Wikipedia(Text) CC BY-SA