From the dawn of space exploration to the formation of the U.S. Space Force, U.S. Space Force - Guardians of the High Frontier provides a comprehensive and engaging look at how space has become the ultimate frontier for national security. In this insightful and meticulously researched book, readers will journey through the geopolitical and technological milestones that led to the establishment of America's newest military branch-the U.S. Space Force. The narrative begins with the Cold War, where space was first recognized as a strategic domain, and traces the development of space-based defense strategies through key moments in history, including the enactment of the 1947 National Security Act, the formation of NASA and the National Reconnaissance Office (NRO), and the rise of Russia's and China's space forces. Each chapter builds on the last to reveal the intricate web of defense organizations, strategies, and technologies that have shaped the modern military space landscape. The US Space Force - Guardians of the High Frontier offers a detailed exploration of America's military space history, from the early establishment of Army and Navy space commands to the development of anti-satellite weapons, culminating in the creation of the Space Force in 2019. The book sheds light on the critical role the Space Force plays in securing the nation's space assets and ensuring the U.S. maintains dominance in the increasingly contested high frontier. This book is essential reading for anyone interested in understanding the evolution of military space operations, the challenges posed by global competitors, and the future of American leadership in space.