‘Who is a nurse?’ and ‘What is nursing?’ seem to be simple questions yet the answers are strangely elusive. This book explores the variations in structure and organization of the nursing workforce across the different countries of Europe. This diversity, and the reasons for it, are of more than academic interest. The work of nurses has always had a critical impact on patient outcomes. As health systems shift radically in response to rising demand, the role of nurses becomes even more important.