I work on the social, political, military, economic and cultural history of war since 1500, primarily for German-speaking Europe from the sixteenth to the early nineteenth centuries, but also more widely across Europe and the world into the early twentieth century. I have always taken a broad approach to studying conflict, believing that war can only be understood when placed in its wider context, and this has encouraged me to study the political and cultural history of the Holy Roman Empire 800-1806. My current projects include how resource mobilisation promoted cooperation as well as competition between states and non-state actors in Europe 1560-1850.