The robust approach of the American forces in for example Afghanistan and Iraq is often criticised and compared to the more soft approach of the British forces. However, there are surprisingly few systematic studies on the relationship between the conduct of force and the outcome of peace operations. Two kinds of military conduct in Afghanistan have been explored in this article, one that could be called 'minimum force' and one that could be called 'show of force'. Contradicting the commonly held idea of the superiority of 'minimum force', 'show of force' correlated with a better outcome than the 'minimum force' approach. However, before arguing that a 'show of force' approach is a better way to conduct peace operations, more reliable data on the outcome, and additional case studies, are needed.