Was war intense and frequent enough in Latin America to cause state formation? How should we evaluate the capability of these states in the nineteenth century? This chapter presents a background of how war formed the colonial state in Latin America and features some cross-regional comparisons between Europe and Latin America which give context to the rest of the book. After showing how warfare in Europe and in the Americas led to the institutionalization of the colonial state, I focus on entire century between the Napoleonic Wars and WWI to show that Latin America faced comparatively frequent and severe warfare during this period. I then show that the territorial effects of warfare were similar in both regions and that the modes of financing war were also comparable and similarly conducive to state building. Put together, these pieces of evidence demonstrate through simple descriptive comparisons that the idea of a relatively peaceful Latin America populated by weak states, although a valid overall characterization of the region in the twentieth century, collapses when our focus is the nineteenth century.