Christian Hartmann – författare

The war between Nazi Germany and Stalin's Soviet Union that raged between 1941 and 1945 was the ultimate confrontation between the two great totalitarian ideologies of the twentieth century. Unprecedented in the scale of the destruction that it wrought and the deep historical scars that it left behind, it was a gargantuan conflict in every sense of the term: in the vast territories over which it ranged, its intensity and duration, the huge numbers of people involved -- and last but by no means least, the millions of victims that it claimed. The invasion of the Soviet Union was the conflict that Hitler had always ultimately planned for: a pitiless war of conquest and destruction in which the Fuehrer dreamed of creating his 'Thousand Year Reich', destroying his ideological opponents, and enslaving or 'eliminating' whole peoples in the process. It was right from the start a struggle for survival, conducted with great bitterness and savagery by opponents who knew that defeat meant the destruction of everything they stood for. The outcome of this bitter struggle was quite as momentous as the struggle which had preceded it. By 1945 a huge swathe of Europe between Berlin and Moscow had been reduced to a devastated wasteland in which whole societies had been erased from the face of the earth. Over 26 million Soviets and between four and five million Germans lay dead. The victory of the Red Army transformed the Soviet Union into one of the world's two superpowers. It also saw the complete destruction of Hitler's megalomaniac vision for the East, the division of the German Reich, and the Soviet domination of Eastern Europe for a generation. In Operation Barbarossa, German military historian Christian Hartmann draws upon the latest research, enriched by a wealth of eye-witness testimony from both the Soviet and the German sides, to paint a masterly overview of these momentous four years and their human consequences - one that is both gripping, and at times deeply moving.

With around 3 billion subscribers, GSM is the world's most commonly used technology for wireless communication. Providing an overview of the innovations that have fuelled this phenomena, GSM: Architecture, Protocols and Services, Third Edition offers a clear introduction to the field of cellular systems. Special emphasis is placed on system architecture and protocol aspects, and topics range from addressing concepts through mobility management to network management. This third edition contains around 25% new and reworked material and has been thoroughly updated to encompass recent advances and future trends. It serves as both an introductory textbook for graduate students as well as a reference resource for telecommunications engineers and researchers.This edition: Presents capacity enhancement methods like sectorization, the application of adaptive antennas for Spatial Filtering for Interference Reduction (SFIR) and Space Division Multiple Access (SDMA)Provides a detailed introduction to GPRS, HSCSD, and EDGE for packet-switched services and higher data ratesFeatures updated coverage on the vastly expanded range of GSM services, including an examination of Multimedia Messaging Service (MMS)Adopts a highly graphical approach with numerous illustrations

2010. No year in the Bundeswehr's mission in Afghanistan has been so dramatic, none has been so lossy. As a group leader in a combat company, Sergeant Major Markus Götz was, so to speak, "right in the middle". Nevertheless he wrote down; Day after day he recorded and processed his experiences. The result is a comprehensive, meticulous and, last but not least, authentic protocol, the pull of which one can hardly escape. This edition is supplemented by a detailed introduction about the reasons, the genesis and the course of the Bundeswehr's mission in Afghanistan as well as by an equally knowledgeable and concentrated commentary on this historical source.