It is commonplace that warfare was integral to the European expansion, pitting the superiorities of the European against the inferiorities of the ’native’. The aim of this book is to look deeper, and to examine the technological, political and economic structures and capacities of the competing forces that shaped their ability to wage war, and the impact that colonial wars had on European and non-European states and societies alike. Questions of the extent to which one side could adapt its military institutions, tactics and technology to those of its opponents figure prominently. This was far from an inevitable one-way process, and environment and disease remained vital factors. The studies also situate these conflicts within the broader debate concerning the so-called military revolution, and show that our ideas of this need to be reconsidered in the light of what was happening outside Europe.