To combat improvised explosive devices (IEDs), the US Army has set up an air/land task force whose effectiveness has enabled it to put into practice the principles that underlie its RSTA-FCS (reconnaissance, surveillance, targeting, acquisition-Future Combat System) concept. Unpredictable, reactive, omnipresent and flexible, three-dimensional land combat is made possible by the integrated action of helicopters, unmanned aerial vehicles (UAVs) and ground troops. This constitutes a true tactical breakthrough, suited to the needs of asymmetric warfare.