A method for assuring safety during firing exercises with live ammunition by mobile skirmish participants (11, 11) practicing under combat conditions in an enclosed practice range (10) that is monitored from a monitoring center (14), to protect all participants (11, 11) from being shot by firing participants (11). The instantaneous positions of the participants (11, 11) are continuously determined, and transmitted to a monitoring center (14) wherein the transmitted positions and movement regions derived therefrom for all participants (11, 11), and the positions of stationary objects (13) that are present, are used to calculate current, authorized firing sectors (38) for the firing participants (11) and are individually transmitted to the firing participants (11). For each firing participant (11), the instantaneous weapon setting (39) is compared to the assigned firing sectors (38), and firing authorization is only given if the instantaneous weapon setting (39) lies within these firing sectors (38).