In November 2001, DSTL, QinetiQ and the U.S Air Force Research Laboratory (AFRL) completed the first synthetic Composite Air Operation (COMAO) experiment to assess the potential of networked simulation for providing Coalition Mission Training (CMT) for the front-line. The exercise, named trial VirtEgo (the Virt stands for Virtual and Ego stands for a conscious, thinking subject) was designed to satisfy both training and research objectives in a tactically relevant and instructionally valid environment. The operational goal was to prepare RAF pilots for the Combined Qualified Weapons Instructors (CQWI) Operational Phase two weeks later in Scotland. The CQWI is the RAF s fighter weapons school. The training research goal was to leverage current US and UK simulation-based training initiatives in a CMT exercise. This effort examined the coalition training potential of linking the simulation facilities at Bedford (where the UK aircrew and expert White Force were co-located) with the USAF Research Laboratory, Warfighter Training Research Division (AFRL/HEA), Mesa, US where an experienced F-16 4-ship team participated as part of overall combat package. The UK portion was sponsored by Strike Command to provide synthetic COMAO training for students on the CQWI course, (namely 2 RAF Jaguar pilots and 2 Tornado F3 RAF crews). Key instructional features included specifying training objectives based on Mission Essential Competencies (MECs); applying and evaluating distributed planning, briefing and debriefing processes and technologies; and using common training and field evaluation measures with all participants. This paper provides an overview of the design, rationale and data from the experiment. It will also establish the way ahead for future coalition training research.