After more than 13 years of research on ROE instructions issued by governments to national military contingents deployed to operate as part of multinational security endeavours around the world, and especially the continuing existence and consistently negative effects of national caveat limitations and bans within these ROE, I will now attempt in the following to shine more light on this hazy and poorly-understood subject. In particular, I will try to assist general understanding on this vital issue in military operations by answering, to the best of my knowledge, three basic and crucial questions as to the normative status and practices of nations with regard to ROE. This blog addresses the first question: Are ROE Legally-Binding “Military Orders” or Merely Guidelines?