Abstract : Currently, actors who deal with crisis situations have to make decision under stress and to act in emergency for mitigating the consequences or avoiding the impacts on critical stakes. To achieve this common goal efficiently, these actors must constitute a crisis cell and collaborate in a coordinated way. But crisis management requires skills which depend mainly on experience. That is why, this work aims to propose a set of methods in order to characterize training decision makers. In order to develop a semi-virtual training environment for strategic crisis management, four axes are studied. The first one focuses on a design pattern - based on chronological, systemic and functional analyzes - and leads to the specification of a real generic training platform. The second one defines a methodology for the semi-automatic generation of dynamic crisis scenarios (models, databases, etc.). The third one deals with a simulation model (based on a multi-agent system), and especially a dedicated typology for required events: the phenomena (reactive agents), the operational and tactical actors (archetypical agents), and the pedagogical events (action of trainers). The last one contributes to facilitate the exercises animation and the debriefings management, thanks to three methods of participant assessment. Sixteen indicators are defined and used, in particular, to build capability trees. Finally, three of these four topics have been validated and the first results seem to fit with the aim of the semi-virtual training environment developed.