The intimate relationship between warfare and political administration in early modern Europe has been extensively detailed through the debates regarding the military revolution. First outlined by Michael Roberts in 1955 and thoroughly expanded by Geoffrey Parker, the concept of the military revolution explains the growth of the armed forces during the early modern period, and fundamentally links it to the expansion of state power. While historians continue to debate the extent of this revolution, as well as its timing, geographical location and causality, its widespread influence demonstrates the energy of investigations into the relationship between war and the development of the early modern European state.