Book excerpt: This book contains the proceedings of a conference held by the Royal Australian Air Force (RAAF) in Canberra in 1994. Since its publication by the RAAF's Air Power Studies Center in that year, the book has become a widely used reference at universities, military academies, and other educational institutions around the world. The application of aerospace power has seen significant developments since 1994, most notably through American-led operations in Central Europe and continuing technological advances with weapons, uninhabited vehicles, space-based systems, and information systems. But notwithstanding those developments and the passing of six years, the value of this anthology of airpower in the twentieth century seems undiminished.