The conquest of the stratosphere was one of the most dramatic and ambitious goals of early twentieth-century aviation. While Western efforts to push ever higher into the thin air above 10,000 metres are relatively well known, Soviet projects in this field have remained obscure outside Russia. This groundbreaking book reveals, for the first time in English, the full story of Soviet attempts to master high-altitude flight.

Authors Mikhail Maslov and Nikolay Yakubovich, leading historians of Russian aviation, trace a wide range of projects that spanned more than half a century. Beginning with the bold balloon ascents and record attempts of the 1930s, they explore the development of specialised stratospheric aircraft, experimental engines, and the pioneering work on pressure suits and cabins needed to keep pilots alive. Wartime research is examined in detail, followed by post-war efforts to create reconnaissance aircraft capable of operating on the edge of space, including responses to Western high-altitude projects.

Based on original Soviet archival material and illustrated with rare photographs, technical drawings, and design studies, this book highlights both successes and failures. Many of these projects never advanced beyond prototype stage, yet they inspired later generations of designers and contributed directly to the development of space technology.

Stratosphere Assault offers a unique and richly illustrated account of a forgotten chapter of aviation history. It shows how the Soviet Union pursued high-altitude flight with determination, ingenuity, and ambition, and how these efforts reflected both the political priorities and the technological limits of their time.