The corporate intelligence field does not have the same characteristics, or the same stakes, than the political or the military intelligence one. But rightly, its characteristics allow to us tactical analysis to forecast what would happen. Competitors, companies, have known technologies, capacities, finances, resources and pre-defined markets. In these conditions, they have a limited number of “options”. “Operational decision elaboration method” uses tactical intelligence to determine what an “adversary” is able to do when confronted to another “party”: what are its equipments, troops, intentions, organizational and operational behaviors. Thus, a military strategist has constraints, imperatives, objectives, limited means and variables that will create an uncertainty for the fulfillment of the mission. This is where intelligence plays a role. The article would stress how this method allow to forecast companies decisions, as their variables and options are less diversified than in the military field. This method would not allow to forecast precisely every decision but limit the number of factors to monitor: the consequence is a better ability to orientate corporate intelligence means, themselves more limited than in the military field. In this case, analysis takes an even more important place.