Mr. John Warren
Last updated: 8 September, 2026
2025 ORSA Hall of Fame Inductee
Inducted: September 2025
Federal retirement: August 2017
Service and Career
- 1970-1972: Army service.
- 1972-1980: Programming work for the Signal Corps agency USA-CEEIA-CONUS.
- 1980-2017: Operations research at the Army Concepts Analysis Agency and its successor, the Center for Army Analysis (CAA).
Achievements
- Spent 37 years in operations research, mentoring Army colleagues and becoming CAA's recognized Excel expert.
- Produced analyses supporting decisions about Army systems, equipment fielding, and operations.
- Helped develop ATCAL, improving the methodology used to estimate system performance.
- Applied COSAGE expertise to uncover and resolve an important UAV-modeling error.
- Helped verify and validate JICM for Army campaign analysis.
- Created the John Warren Tool to assess COSAGE boards for use in JICM.
- Supported updates to JICM air-to-ground munition Expected Kill values through reverse engineering of data.
"He is a shining example for all citizens of our great Nation."
Biography summarized from the original 2025 inductee profile.