The U.S. military’s Low Cost Uncrewed Combat Attack System, or LUCAS, is a one-way autonomous attack drone, publicly confirmed in early 2026 during strikes on Iran. It represents a shift toward low-cost, expendable unmanned systems designed to conduct precise strikes against hardened targets without risking pilots or expensive aircraft. LUCAS was deployed during Operation Epic Fury, the U.S. and allied campaign against Iranian military infrastructure that began on February 28, 2026, and is still ongoing, striking Revolutionary Guard command facilities, air defense systems, missile and drone launch sites, and military airfields across northern, central, and southern Iran. According to the non-profit research group, the Institute for the Study of War, the operation demonstrates how coalition forces are integrating new autonomous strike capabilities into modern warfare.
The program traces back to late 2022, when U.S. forces recovered an intact Shahed 136-style loitering
drone in Iraq. Iranian-backed groups had used these drones for long-range operations, demonstrating their low-cost autonomous strike capability. Engineers reverse-engineered the airframe, propulsion, and
flight systems to develop LUCAS, integrating American autonomous guidance, navigation, mission coordination, and precision targeting. Captured Iranian UAVs were also analyzed to refine strike algorithms, ensuring the drones could avoid civilian areas, which is a rarity among reverse-engineered loitering munitions because most are designed for cheap mass strikes without discrimination.
LUCAS is roughly 11.5 feet long, with an 8.2-foot wingspan, and carries a 40-to-110-pound payload. It can be launched from truck-mounted rails, catapults, rocket-assisted boosters, or ships, and incorporates waypoint navigation with multi-drone sensor sharing for coordinated strikes. Each unit costs approximately 35,000 dollars, allowing scalable deployment under the “attritable” doctrine: high-volume, low-cost unmanned systems that saturate defenses and strike distributed targets efficiently. By December 2025, LUCAS underwent successful maritime testing from a littoral combat ship, demonstrating their flexibility across environments.
During Operation Epic Fury, LUCAS drones operate alongside conventional U.S. and Israeli forces, striking missile storage sites, radars, command centers, naval missile units, and internal security facilities across Iran. Iranian retaliation involved roughly 170 missiles and UAV attacks, resulting in Four U.S. service members being fatality wounded from missile debris and secondary explosions.
By March 1, LUCAS had destroyed over 2,000 confirmed targets, including a medium-range Ghadr missile base north of Tehran, with missiles capable of a 1,950-mile range. The drones focused on command facilities and radar arrays to disrupt coordinated missile launches. By March 2, Iranian missile and UAV capabilities were limited, and coordination with proxy forces had been disrupted. According to the Institute for the Study of War, “Operation Epic Fury continues with coalition forces integrating new autonomous strike capabilities to degrade Iranian military infrastructure while maintaining precision and minimizing civilian risk.”
LUCAS exemplifies how autonomous loitering
munitions are being integrated with conventional air and missile assets, allowing for synchronized strikes that disrupt enemy command and control, degrade missile and UAV capabilities, and enhance overall combat effectiveness in ongoing operations like Epic Fury.