Being responsible for agreeing NATO wide the standards on simulation interoperability, the way, the Independent Specialists Working Group 4 (ISWG.4) works and the achievements already obtained, are explained. Also, current and future activities of ISWG.4 are mentioned.

The paper offers insights into NATO policy concerning interoperability for Simulation Training and gives a view in the importance of networked training systems for Commanders and their Staffs of a multinational coalition force.

One of the first Partnership for Peace (PfP) workshops was organised by ISWG.4. Experiences with PfP and lessons learned are within this paper.