This is a study of Nazi Germany's war relations to the five continental European neutrals: Portugal, Spain, Switzerland, Sweden and Turkey. Questioning the true commitment to neutrality of the five states, the book details not simply the development of relations to Germany, but also highlights the contribution the states made to Germany's war effort. The author explains that the Nazi regime benefitted in large measure from permitting these five countries to remain neutral. Even while Germany's military fortunes were declining in 1943 and 1944, it continued to receive vital services from the neutrals. Based on a wide reading of secondary sources in English, German, Spanish, Swedish, Portuguese, French and Turkish, and supplemented by documentary evidence from various German archives, this book enables readers at all levels to gain insight into a significant aspect not only of the history of Nazi Germany, but also the history of the Second World War in Europe.