U.S. Army Tests AI and Electronic Warfare to Stop 100-Drone Swarms From Overwhelming Battlefield Defenses.

The U.S. Army’s XVIII Airborne Corps tested artificial intelligence, electronic warfare, radar, autonomous systems, and defensive fires against mass drone attacks during Scarlet Dragon 26-3 at Fort Bragg, North Carolina. The exercise matters because swarms of up to 100 unmanned aircraft tested whether U.S. forces can detect, track, and defeat saturation attacks before they overwhelm battlefield defenses.

The scenarios examined how multiple sensors, AI-enabled decision tools and layered effectors can work together against large numbers of drones approaching simultaneously. The results could shape future counter-UAS defenses as massed unmanned systems become a growing threat to command posts, air defenses and other high-value forces.

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Small unmanned aircraft systems launched from the Holland Drop Zone at Fort Bragg during Scarlet Dragon 26-3 on Sept. 16, 2026, as XVIII Airborne Corps tested coordinated drone swarms and layered counter-UAS defenses. (Picture source: U.S. Department of War/Defense)

Held from September 11 to 17, 2026, Scarlet Dragon combined soldiers, military systems, artificial intelligence, resilient data pathways, and defense-industry technology in an integrated field experiment. According to the XVIII Airborne Corps report published by the U.S. Department of War on September 21, 2026, the exercise was designed around the increasingly urgent requirement to protect command posts, logistics nodes, air-defense positions, and maneuver forces from large numbers of small unmanned aircraft operating simultaneously. The scale of the event is significant because it moves the counter-drone problem beyond isolated engagements and into the conditions a major operational formation could face during a high-intensity war.

Rather than evaluating individual counter-UAS technologies separately, Scarlet Dragon examined how multiple sensors and effectors could function as a connected defensive network. XVIII Airborne Corps chief of fires Col. Rob Kenny said the exercise reinforced that no single sensor can solve the problem alone, emphasizing the need to combine radar, acoustic detection, autonomous technologies, and other sensing methods with command-and-control systems that can distribute targeting information rapidly. This layered approach is intended to prevent a swarm from overwhelming one detection method or exploiting gaps created by terrain, low-altitude flight profiles, electronic interference, or the sheer number of incoming aircraft.

Artificial intelligence becomes especially important when dozens of unmanned aircraft appear at the same time. The challenge is not only detecting targets but processing large volumes of sensor data, correlating tracks, identifying potential threats, and passing usable information to operators quickly enough to support an engagement. AI-assisted processing can reduce the burden on crews by helping classify contacts and prioritize targets, while resilient command-and-control links are required to move that information between sensors, electronic warfare teams and defensive weapons before hostile drones reach their objectives.

Electronic warfare formed another central part of the defensive architecture. Electronic attack can provide an early, potentially lower-cost layer against unmanned aircraft that depend on radio-frequency command links, satellite navigation, or vulnerable datalinks, while kinetic weapons remain necessary against drones using autonomous navigation, hardened communications, or pre-programmed flight paths. The combination is operationally important because relying only on missiles or other interceptors against repeated drone waves can quickly create an unfavorable cost exchange and exhaust limited ammunition stocks.

The exercise also demonstrated the role of existing Army air-defense sensors in this wider network. U.S. Department of War imagery from September 15, 2026, showed an AH-64 Apache attack helicopter conducting a low-altitude pass near a Sentinel radar as the Army stressed detection and tracking systems against complex aerial activity. Sentinel radars already provide Army formations with mobile low-altitude surveillance, but Scarlet Dragon highlighted that radar data must be shared rapidly across the force rather than remaining isolated at the sensor. Passive systems such as acoustic sensors can complement radar by providing additional detection opportunities while reducing dependence on continuously transmitting emitters that may themselves become targets for enemy electronic warfare.

The experiment's operational significance lies in how a swarm of up to 100 unmanned aircraft can pressure several parts of a defensive network at once. A mass attack can saturate radar coverage, consume communications bandwidth, overload command-and-control processes, complicate target prioritization, and force commanders to make rapid decisions about which threats to jam, track, or destroy kinetically. These conditions are far more demanding than one-on-one counter-UAS demonstrations and more closely reflect the challenge U.S. formations could face against an adversary able to launch large numbers of inexpensive reconnaissance, strike, or decoy drones in coordinated waves.

For XVIII Airborne Corps, the issue is directly tied to the survivability and freedom of action of a deployable corps headquarters and its subordinate formations. Command posts, artillery positions, aviation facilities, logistics hubs and air-defense units are all high-value targets that can increasingly be located and attacked by relatively inexpensive unmanned aircraft. Building a layered defense that combines AI-assisted sensing, electronic warfare, autonomous systems and defensive fires therefore supports more than local protection: it helps preserve the command, sustainment and firepower needed to keep a large formation operating under sustained aerial pressure.

The Corps also used Scarlet Dragon as a mechanism for rapid interaction between soldiers and defense companies, exposing new technologies to operational conditions and adjusting them based on user feedback. That approach is becoming increasingly important because drone threats evolve faster than traditional procurement cycles, with commercial components, new communications methods, autonomy and navigation techniques changing the effectiveness of countermeasures over relatively short periods.

XVIII Airborne Corps plans to continue validating these technologies during Scarlet Dragon 27-1 in April 2027 before the larger Summit Strike exercise at Fort Drum, New York, in September 2027. The progression indicates that the Army is moving beyond asking whether individual counter-drone systems work and toward determining whether sensors, AI-enabled processing, electronic warfare, autonomous systems, and defensive fires can operate together at the scale required to protect a major U.S. Army formation against sustained mass-drone attacks.

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Written by Alain Servaes – Chief Editor, Army Recognition Group
Alain Servaes is a former infantry non-commissioned officer and the founder of Army Recognition. With over 20 years in defense journalism, he provides expert analysis on military equipment, NATO operations, and the global defense industry.