The article assesses the role of the military in the global dissemination and exchange of music in the long nineteenth century. It shows that, first, Western military music and its instrumentation were influenced by cross-cultural encounters, primarily with the Ottoman Empire. Second, I argue that educational professionalization and instrumental standardization were important vehicles for the global rise of the military band beyond its original purpose. Third, tracing the transnational careers of some German military musicians will make evident that competition with respect to national prestige, rising imperialism, and the increasing commercialization of musical life were crucial features of the spread of military musicians all over the world, making them cultural brokers not only of military music.