US Strategy to Counter Cheap Drones: Marine Corps' MADIS System Explained
On a hillside overlooking the South China Sea, a group of US Marine Corps personnel in tactical vehicles aimed at a fixed-wing drone approaching them. The cannon mounted on the vehicle fired, leaving a thin plume of smoke in the air. After several attempts, the target was neutralised and fell into the sea.
The exercise held in the Philippines last April illustrates the US’s efforts to tackle one of the most pressing challenges in modern warfare: neutralising low-cost drones without depleting budgets on missiles that could cost ten times more than the target.
For the US Marine Corps, the vehicle they use—known as the Marine Air Defense Integrated System (MADIS)—is a key part of the solution. MADIS consists of two lightweight tactical vehicles (JLTVs), the successor to the Humvee.
The system also features electronic warfare capabilities such as jamming. Both MADIS vehicles are equipped with cannons and machine guns using new anti-drone ammunition types.
In the Middle East, the US and Gulf nations use helicopters and aircraft with guns to shoot down Iranian drones. However, they also heavily rely on air-to-air missiles like the AIM-120, each costing US$1 million (approximately £800,000).
The core idea behind MADIS is to provide field commanders with options—using bullets, missiles, or electronic warfare—allowing them to choose the best method to protect troops without financial strain.
By comparison, Iranian Shahed drones cost around US$30,000 each.
One of MADIS’s most promising features is its ability to fire 30mm ammunition with a proximity fuze. This technology allows bullets to detonate near the target, eliminating the need for a direct hit.
Although less accurate than missiles, this ammunition is far more cost-effective. Steven Sawyers, a former NATO ammunition technician, estimated that even with five bullets needed to down one drone, the total cost would be around US$11,250 (approximately £9,000).
Despite being cheaper, a major challenge for US defence manufacturers is producing sufficient quantities of this ammunition. Hundreds of thousands of rounds will be needed to counter mass drone threats in the future.
Companies such as Northrop Grumman and L3Harris are reportedly scaling up production to meet soaring demand for proximity fuzes. This is critical given MADIS’s mobility is vital for Marines preparing for potential conflicts in the Indo-Pacific island environment, including the South China Sea.
During the Philippines exercise, Marines ultimately fired a Stinger missile as a final measure. The drone was downed with a single shot, proving that while cheaper options exist, missiles remain the trump card in critical situations. (WSJ/I-2)
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