National Service (NS) is one of Singapore's foundational public policies. First implemented by the British in 1954, amended in 1967 to provide a means to defend a fledgling independent nation, and codified into its present form in 1970, NS is a key pillar of Singapore's defence. Its significance, however, goes beyond defence. With over 1 million male Singapore citizens and permanent residents having served NS, and consequently involving many more in different ways, NS is deeply woven into Singapore's political and social fabric. This volume brings together a range of scholarly perspectives on NS which explore its past, present and future in four sections: The history of NS, NS in practice, debates on NS and an international perspective.