High resolution wall-dispays are more and more used in research contexts in order to visualize, explore and study big dataset. They provide a huge visual space to display data, physical navigation rather virtual, which leads to a more natural pan and zoom, and finally an easy way to collaborate due to their large shared space. Their use in a more operational context like control rooms is more limited, they are most of the time considered as just a big display with which you interact with mice and keyboards. During this PhD, we would like to study how we could embrace the benefits of a wall-display in command and control contexts. To answer this question, we first analyzed the activities in a control room in general, and then focus in a specific use case: road traffic control. In this specific context, we are now working on an experiment to compare the use of a wall-display and several workstations. Then we focussed on collaboration, and study the use of a wall display to perform multi user exploration of graphs, a data structure commonly used in command and control centre. Finally, we studied the use of the capacity of a high resolution wall to help operators assess the impact of their action.