This authoritative guide from the U.S. Department of the Army offers an essential reference into the structure and organization of hybrid threats — the composite mix of conventional, irregular, and criminal forces shaping modern conflict. TC7‑100.4 explores how hybrid threats are composed, how they operate across strategic, operational, and tactical levels, and how U.S. Army training can prepare leaders to anticipate and counter these evolving adversaries. Whether you’re a military professional, strategist, or enthusiast of defense studies, this concise yet powerful manual provides clear insights into complex operational environments. Learn the organizational logic of hybrid forces, understand real-world contextual applications, and deepen your grasp of contemporary security challenges in a world where warfare transcends traditional battlefields.