The opening months of World War II saw Britain's Royal Navy facing a resurgent German navy, the Kriegsmarine. Following the German invasion of Denmark and Norway in early April 1940, British and German destroyers would clash in a series of battles for control of the Norwegian coast. The operational environment was especially challenging, with destroyer crews having to contend with variable weather, narrow coastal tracts, and possibility of fog and ship breakdowns. In two engagements at Narvik, the Royal Navy entered the harbor and attacked the loitering German destroyers who had dropped off mountain troops to support the German invasion. The raids were devastating, halving at a stroke the number at Hitler's disposal. Employing specially commissioned artwork and drawing upon a range of sources, this absorbing study traces the evolving technology and tactics employed by the British and German destroyer forces. David Greentree graduated from the University of York with a BA in History before completing an MA in War Studies at King's College London and qualifying as a lecturer in Further Education. In 1995 he accepted a commission in the Royal Air Force and has served in a variety of locations, including Afghanistan and Oman. He has written several books for Osprey, focusing on British military history and World War II. David Campbell has worked as a freelance new media producer and content specialist for many years, including roles at IBM, the BBC, various internet consultancies and the civil service. He has a broad range of interests in literature and history, including the Middle Ages, the Napoleonic era, naval warfare, and the genesis of the 'military revolution'. His books include CBT 007 German Infantryman vs Soviet Rifleman. Paul Wright has painted ships of all kinds for most of his career, specializing in steel and steam warships from the late 19th century to the present day. Paul's art has illustrated the works of Patrick O'Brian, Dudley Pope and C.S. Forester amongst others, and hangs in many corporate and private collections all over the world. A Member of the Royal Society of Marine Artists, Paul lives and works in Surrey. Alan Gilliland, a contributor to more than 70 Osprey titles, notably in the Weapon series, writes, illustrates and publishes fiction (www.ravensquill.com), as well as illustrating for a variety of publishers (alangillilandillustration.blogspot.com).