ISA/CSA has a proven track record of successful RE supporting procurement work across all sectors (see Contents list). In particular some of the largest UK Defence projects ever undertaken have used G-MARC. Project LARONE and the Type 45 Destroyer both chose Option A (see previous page) whilst the Future Infantry Soldier Technology (FIST) & the Future Wheeled Recovery Vehicle (FWRV) both chose Option B. The Defence Logistics Organization (DLO) applied Option B successfully to Naval Engineering Standard (NES 45) and to the extraction of a body of requirements from an ILS manual use study. The DLO also sponsored the application of Option B to Naval Manning Rules in conjunction with the Naval Manning Agency. This comprehensive contract employed every one of the GMARC phases of Requirements engineering, starting with data capture and audit and ending with full behavioural modeling of the functional aspects of the manning process. The Future Offensive Air System (FOAS) and the UK Military Flying Training System projects also chose to use G-MARC to audit their URD documents and to further develop their User Requirements. The ASTOR (Advanced Stand Off Radar) project chose G-MARC to re-engineer a URD from an existence system specification.
In an independent survey and trial of tools claiming RE functionality, conducted by the Ministry of Defence (MOD) in 1997, G-MARC combination was judged to be the only option which added value to the requirements process. This view can be found expressed in the MOD’s written guidance to projects under the Smart Requirements initiative.
 MOD “Guide to the Production of User Requirements Documents” Version 2 dated 19/06/2000