Transparency and corruption challenges in the defence sphere often affect not only transition states but also established democracies. This compendium, the product of cooperation between Transparency International UK, the NATO PfP team and DCAF, focuses on concepts and tools which can ensure good practices in defence management and policy through ‘integrity building’. Designed primarily as an introduction and reference tool for defence personnel, civilians in the defence sphere, democratic institutions, and civil society will also find materials on integrity building and anti-corruption measures which are relevant to their own security governance activities.