International cooperation, whether based on fixed alliances or on ad hoc coalitions, obviously is now and will be in the future a main feature of practically all military operations. It therefore seemed fitting to look more closely into this topic in the course of the papers presented at the Military History Working Group's (MHWG's) 2005 workshop. More than forty scholars and officers from sixteen countries examined different aspects of military cooperation and, in frank and spirited discussions, contributed to a better understanding of many of the problems involved in the endeavor. The...