This book explores the following areas: 1 British plan for the Balkan Front (Greece-Turkey-Yugoslavia) and responses to the plan 2 Pre-war activities of Section D of MI6 and of Special Operations Executive and their domestic co-operatives in Yugoslavia 3 Drawing Yugoslavia into the Second World War 4 Mission of Foreign Minister Sir Anthony Eden and General Sir John Dill in Greece and the Middle East 5 The role of US Colonel William J. "Wild Bill" Donovan 6 Mission of SOE's George Taylor in Yugoslavia 7 Yugoslavia's adherence to the Tripartite Pact without military clauses and obligations, 25 March 1941 8 Military coup d'état in Belgrade, 27 March 1941 9 British Expeditionary Force in Greece 10 Germany's attack on Yugoslavia and Greece 11 Assessment of the British intervention