Nationalism, Internationalism, and Interventionism: How Overseas Military Service Influences Foreign Policy Attitudes

s How does military experience change individual foreign policy preferences? Prior research on military service focuses on the effects of combat experience on political participation and policy preferences, but combat is not the only military experience that influences attitudes. Living overseas is a common military experience with the potential to shape foreign policy preferences. Using observational data from a sample of military elites and original survey data from a sample of military veterans, I leverage semi-random and non-voluntary assignments to overseas military bases to investigate the relationship between overseas exposure and foreign policy preferences. The data provides evidence that overseas military service increases the likelihood of calling for international engagement, decreases nationalist attitudes, and increases the willingness of military members to assist individual allies. The ability to shape the preferences of military members has important implications for the development of foreign policy and the stability of international engagement.