U.S. Marines Deploy L-MADIS Counter Drone System to Shield Amphibious Forces from Drone Threats.

The U.S. Marine Corps has deployed the Light Marine Air Defense Integrated System (L-MADIS) aboard the amphibious assault ship USS Makin Island off the California coast to protect the 13th Marine Expeditionary Unit from increasingly sophisticated unmanned aerial threats. The move extends counter-drone protection across the amphibious task force, strengthening the force's ability to defend ships and Marines during expeditionary operations.

The integration places an expeditionary air defense capability directly within the amphibious formation, where a small Marine detachment is responsible for detecting, classifying, tracking, and neutralizing hostile drones before they can threaten the ship or Marines ashore. Operating from USS Makin Island, the L-MADIS deployment reflects the Marine Corps' broader effort to adapt expeditionary forces to lessons learned from recent conflicts, where inexpensive unmanned aircraft have emerged as a persistent threat to naval and ground operations.

Related News: U.S. Marines Add Bullfrog M240 Weapon Station to L-MADIS Vehicle for Low-Cost Drone Kills

Two U.S. Marine Corps LMADIS vehicles operated by 2nd Low Altitude Air Defense personnel attached to VMM-263 Reinforced monitor the area around USS San Antonio during a simulated strait transit in the Atlantic Ocean on May 22, 2025 (Picture source: US DoD)

This fielding reflects a broader change in force protection requirements. Small drones combine limited costs, low radar signatures, and flexible flight profiles with the ability to conduct reconnaissance, adjust fires, or carry explosives. L-MADIS is intended to address part of this vulnerability without imposing the logistical footprint of a conventional missile battery.

According to an official communication published by the 13th Marine Expeditionary Unit on July 26, 2026, Marines from the 3rd Low Altitude Air Defense Detachment assigned to Marine Medium Tiltrotor Squadron 364 Reinforced begin operating L-MADIS during training at sea aboard USS Makin Island. The system consists of two Ultra-Light Tactical Vehicles operated by four low-altitude air defense specialists. The first vehicle provides command and control, while the second carries the electronic warfare equipment used against the target. Both platforms can be transported ashore by aircraft and subsequently repositioned across difficult terrain.

For detection, the system uses a Skyview MPV-3 sensor with a stated range of 3,000 meters. It examines frequencies associated with the aircraft to help operators determine its category and identify its control link. An RPS-62 radar then tracks the target through four hemispheric panels providing 360-degree coverage. Connection to the Link 16 network allows track data to be transmitted in real time to the ship or a command post.

Once the threat has been identified, operators employ the MFEW-D, a lightweight electronic jammer designed to disrupt hostile frequencies and communications. The objective is to sever the control link and divert the drone from its intended flight path. This non-kinetic response avoids using an expensive interceptor against a low-cost target and reduces the risks posed by debris near the flight deck. Its effectiveness nevertheless depends on the architecture of the opposing system. An autonomous or preprogrammed aircraft, or one equipped with a jam-resistant link, may require a different effector.

This limitation is directly connected to the planned evolution of L-MADIS. The Marine Corps has selected Allen Control Systems’ Bullfrog M240 weapon station for integration under an initial prototype contract valued at approximately $6.2 million. Bullfrog converts a 7.62 mm M240 machine gun into a stabilized remotely operated station, providing a lower-cost kinetic option against drones that resist electronic warfare. The manufacturer states that the system weighs approximately 136 kg without ammunition, can fire up to 850 rounds per minute, and has an effective range approaching 800 meters. However, there is no indication that this configuration is already installed on the vehicles assigned to the 13th MEU. The selection concerns prototype integration, while the communication from USS Makin Island mentions only the sensors, radar, Link 16, and MFEW-D. Bullfrog should therefore be considered a planned development rather than a capability already deployed aboard the ship.

At the tactical level, L-MADIS provides the 13th MEU with mobile protection that can move from the ship to a beach support area and then to expeditionary positions. Teams can secure a landing zone, protect a forward arming and refueling point, or reinforce a command post. At sea, the training familiarizes the detachment with shipboard procedures. Ashore, the lightweight platform supports rapid movement while preserving airlift capacity. L-MADIS therefore combines detection, track sharing and electronic attack within a layered defense, with the prospect of adding an affordable kinetic effector.

This deployment carries broader implications as drones become part of access-denial strategies in littoral environments. Iran and the groups it supports have demonstrated the ability to combine attack drones, cruise missiles, and coastal surveillance to threaten military and commercial vessels, particularly in the Red Sea and Gulf of Aden, where unmanned aircraft have been used against maritime traffic. In this environment, L-MADIS provides amphibious forces with a short-range defensive layer against certain drones approaching from the coast. Its sensors, jammer, and potentially an effector such as the Bullfrog M240 can reduce the exposure of a ship operating near shore or protect positions established after a landing. The system does not constitute a complete naval air defense capability and cannot replace shipboard radars, surface-to-air missiles, or close-in weapon systems against anti-ship missiles and saturation attacks. Its integration instead reflects an effort to develop a layered architecture for amphibious groups operating in coastal areas that are increasingly monitored, contested and exposed to unmanned systems.

Written By Erwan Halna du Fretay - Defense Analyst, Army Recognition Group
Erwan Halna du Fretay holds a Master’s degree in International Relations and has experience studying conflicts and global arms transfers. His research interests lie in Security and strategic studies, particularly the dynamics of the defense industry, the evolution of military technologies, and the strategic transformation of armed forces.

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