This paper describes a transfer of training trial conducted on a multi-player desktop simulator used for air combat training and provides an analysis of the interim results. The availability of networked desktop simulation technology means that team training in air combat tactics is now achievable at low cost. The critical test of the effectiveness of such a simulation system is the transfer of training to the aircraft. Whilst previous studies have demonstrated performance improvement in simulator exercises in air combat, up until now, transfer of training to the aircraft has not been demonstrated. A trial has been conducted to establish if such transfer occurs from training in pairs tactics conducted on the JOUST multiplayer, desk-top simulation system to the airborne environment. The interim results indicate that transfer of training has been demonstrated. Students trained on the new system exhibited superior performance on a range of behavioural indicators, including communications and tactical leadership.