Although it will replace ModSAF, the OneSAF Testbed Baseline (OTB) is itself an interim product. It represents a bridge program between legacy Computer Generated Forces (CGFs) and the OneSAF Objective System (OOS), a new Department of the Army development program managed by STRICOM that will be a composable, next generation Computer Generated Force. The OOS will represent a full range of operations, systems, and command and control processes from individual combatant and platform to the battalion level.

The Army chose to develop the OTB well prior to the award of the OOS contract to explore potential risk mitigation targets and to examine what legacy artifacts should be directed for reuse and what functionality should be developed under the new contract. In addition, they chose to refine the concept of collaborative development; i.e. customers and developers working side by side. Consequently, the OTB is being used to provide integration, test and user feedback of technology developments and methods for the objective system. OTB provides a type of simulation test-bed never before used by the Army. Over 28 Department of Defense agencies representing the Army, Joint and Coalition organizations provide input and feedback from the various modeling and simulation domains, and combat development organizations. OTB 1.0 was released in December 2000 and is the official replacement for ModSAF The OTB provides a variable level of fidelity that supports ACR, RDA, and TEMO. This paper describes the key technological advances made during the course of the OTB 1.0 development, ranging from Architectural innovations to the complete rewriting of functional areas, e.g. Artillery and Combat Engineering (minefields). In addition to the advances in technology, there were breakthroughs in the software development process itself. The final section of the paper includes some of the key areas where OTB 1.0 is already being employed as an analysis tool and/or low-overhead driver of C4I devices.