How Many THAAD Batteries Does the US Have in 2026?

At least 11 batteries are in service worldwide, by Silent Dossier’s count: eight American, two in the United Arab Emirates and at least one in Saudi Arabia.

The UAE was the first foreign buyer. Its two batteries were delivered and fully operational by January 2024, according to the Missile Defense Agency, and in January 2022 the UAE made THAAD’s first interception in combat by any country, against a Houthi ballistic missile. Saudi Arabia has signed purchase agreements for seven batteries, the largest THAAD order outside the United States, and commissioned its first in July 2025. No other country operates the system.

The first American battery, A Battery of the 4th Air Defense Artillery Regiment, was activated at Fort Bliss, Texas, in May 2008. The seventh followed in December 2016. Congress paid for an eighth in the fiscal 2021 defense bill, Lockheed Martin won a $74 million contract to build it on April 21, 2022, and the company delivered its first three launchers and fire-control unit to the government in June 2025.

Two are permanently overseas, on Guam and in South Korea, and the rest are based in Texas when they are not deployed.

Under the Army’s 2019 air and missile defense plan, three batteries are based at Fort Bliss, two at Fort Cavazos, one at Seongju in South Korea, about 130 miles south of Seoul, and one on Guam. The Army has not said publicly where the eighth will be stationed.

Guam has had a THAAD battery since an emergency deployment in 2013. On October 16, 2026, the Army activated the 3rd Battalion, 43rd Air Defense Artillery Regiment at Andersen Air Force Base to take over that mission, combining THAAD with Patriot and the Army’s Enduring Shield cruise-missile defense in one unit for the island’s defense.

The rest of the force rarely stays home. The Pentagon sent a battery to the Middle East on October 21, 2023, after the Hamas attack on Israel, and another to Israel itself on October 13, 2024, with about 100 American soldiers to run it. With that deployment at least half of the eight batteries were on operations at once. Army officials call THAAD the service’s most deployed formation.

Because each battery costs billions to buy, and the soldiers who run it are already worked hard.

One widely used 2025 estimate puts the cost of a single battery with 192 interceptors at about $2.73 billion, plus about $32.5 million a year to operate and maintain it. Most of that is missiles: at about $12.7 million each, 192 interceptors come to roughly $2.4 billion, as we set out in How Much Does a THAAD Missile Cost?

Manpower is the second limit. Each battery needs trained radar, fire-control and launcher crews, and the Army has warned that its air defense units carry some of its highest operating tempo. Congress has been asked to consider forming THAAD units in the Army National Guard, and the Army and the Missile Defense Agency are working on a plan, reported in March 2026, to move THAAD fully under Army control by fiscal 2027.

President Trump’s Golden Dome missile shield could change the numbers. The Army has not said how many THAAD units the homeland shield will need, but its fiscal 2027 request asks for $11.4 billion for THAAD procurement, money that buys interceptors rather than new batteries.

Probably between about 230 and 280 American interceptors, according to independent estimates made after the first months of the 2026 war with Iran. The Pentagon does not publish the figure.

Those estimates put the stock at about 452 before the war. During the 12-day war between Israel and Iran in June 2025, American crews fired about 92 interceptors out of an estimated 632, almost half of all the interceptors the United States and Israel used against Iranian medium-range missiles. The Missile Defense Agency had delivered 799 interceptors in total to the Army and foreign buyers by October 1, 2023.

Production is rising from a low base. Lockheed Martin builds about 96 interceptors a year and agreed with the Pentagon on January 29, 2026 to reach 400 a year over seven years. Even at the higher rate, rebuilding the stock could take three to eight years. Patriot faces the same squeeze, as we showed in How Many Patriot Missiles Does the US Have?

Partly, and only for a few months. Launchers left the Seongju base in early March 2026 as the United States reinforced the Middle East for the Iran war, and all six were back at Seongju by June 2026.

Neither Washington nor U.S. Forces Korea has said whether the launchers themselves went to the Gulf or only carried their interceptors to an air base for the flight there. South Korea’s government said it could still deter North Korea while the equipment was away. The episode showed how thin the American THAAD force is: to cover one theater, the Pentagon borrowed from a battery that exists to defend another.