Despite the longevity and the relative simplicity of the concept of a ceasefire, there has been little agreement, and much confusion, around their nomenclature. This chapter is primarily devoted to better understanding and interrogating these definitions. It moves away from the conventional view of ceasefires that focusses primarily on their success at reducing violence and battle related deaths or their ability to lead to a peace agreement, and instead traces the genealogy of the literature on conflict resolution and the state to the scholarship on the construction of order beyond the state to argue that ceasefires should not only be considered military tools but types of wartime order that have statebuilding implications.