What is the FGM-148 Javelin? The Fire-and-Forget Anti-Tank Missile That Defined Ukraine’s War

The FGM-148 Javelin is a U.S. shoulder-launched fire-and-forget anti-tank guided missile (ATGM) jointly produced by Lockheed Martin and Raytheon (RTX). Conceived in the late 1980s to replace the Cold-War-era M47 Dragon, the Javelin married two technologies that no portable anti-tank weapon had carried before: an imaging-infrared seeker that locks onto the target before launch, and a top-attack flight profile that strikes a tank through its thin turret roof rather than its frontal armor. The Russo-Ukrainian war turned a quiet program into a household name: by the end of 2023, the United States had transferred more than 10,000 Javelin rounds to Ukraine, where the missile became the iconic weapon of the war’s opening phase.

Key facts at a glance

Origins: replacing the Dragon

The Pentagon’s Advanced Antiarmor Weapon System – Medium (AAWS-M) requirement, opened in 1986, sought a replacement for the wire-guided M47 Dragon — a weapon so unloved by infantrymen that it acquired the nickname “the suicide stick.” In June 1989, Texas Instruments and Martin Marietta (later merged into Lockheed Martin) won AAWS-M with a concept featuring imaging-infrared homing and top-attack engagement. Engineering and manufacturing development began in 1991; the system received its FGM-148 designation and the name Javelin in 1995. First production rounds reached the 25th Infantry Division in 1996.

How fire-and-forget works

The Javelin is composed of two physically separate pieces: the missile in its disposable launch tube and the reusable Command Launch Unit (CLU). The CLU is essentially a 5 kg thermal sight with day camera, four-power magnification (nine-power optical zoom) and the targeting electronics. To fire, a gunner:

1. Cools the seeker with bottled coolant (about 30 seconds).
2. Frames the target in the CLU and presses the SEEK button — the missile seeker captures and stores the target image.
3. Confirms top-attack or direct-attack mode and fires.

After launch the missile is autonomous: it climbs to roughly 160 m for top-attack profiles, then dives, comparing its real-time IR image to the locked reference image to track even mobile or partially obscured targets. The gunner can move, take cover, or engage a second target immediately — the foundation of the shoot-and-scoot doctrine that has made Javelin such a force multiplier in Ukraine.

Top-attack: the design choice that defined the weapon

Modern main battle tanks (MBTs) carry their thickest armor on the frontal arc — typically 600–1,000 mm RHA-equivalent on the glacis plate. Turret roofs and engine decks, by contrast, are usually 30–80 mm. Javelin exploits this asymmetry by climbing above the target and diving onto its weakest aspect with a tandem HEAT warhead: a small precursor charge defeats explosive reactive armor (ERA), and a 0.6 kg main charge penetrates the relatively thin top armor. Public estimates put penetration at roughly 750 mm RHA after defeating ERA — enough to destroy any current Russian, Chinese or Iranian MBT through the roof.

Variants

Combat record

Javelin’s combat history spans four major theaters:

• 2003 – Iraq War. First combat use. U.S. Marine and Army units used Javelin against T-72s, BMPs, and bunkers. Public Pentagon assessment recorded a kill probability above 90 percent.
• 2007–2014 – Afghanistan. Heavily used against insurgent strongpoints and technicals; the multi-purpose warhead concept was funded by Afghan-war lessons.
• 2014–2019 – Iraq and Syria. Anti-Daesh operations. Iraqi Counter-Terrorism Service Javelin teams destroyed dozens of suicide VBIEDs during the Battle of Mosul.
• 2018 – Ukraine (pre-2022). 210 missiles and 37 CLUs delivered under the Trump administration but kept away from the front line until February 2022.
• 2022–present – Russo-Ukrainian war. Ukraine has received more than 10,000 Javelin rounds. Verified destruction includes T-72B3M, T-80BVM, T-90M, BMP-3, and 2S19 self-propelled howitzers. The image of a Ukrainian soldier carrying a Javelin became known internationally as “Saint Javelin.”

Operators around the world

How Javelin compares

Production surge after 2022

The Javelin Joint Venture is in the middle of the largest production ramp in the missile’s history. Annual output rose from 2,100 rounds in 2022 to 4,000 in 2025, with a contracted target of 3,960 per year through 2027. Lockheed Martin’s Troy, Alabama facility is being supplemented by a new line in Camden, Arkansas. The U.S. Army has also begun receiving the LWCLU, which Lockheed is producing at roughly 1,500 units per year, alongside Foreign Military Sales (FMS) deliveries to Australia, Taiwan and several NATO members.

Limitations

• Cost. A single Javelin round costs roughly USD 178,000, plus a USD 250,000 CLU. Against light vehicles, the cost-per-kill ratio can be questionable.
• Cool-down time. The seeker requires a battery coolant unit to chill the IR detector before lock-on; in a high-tempo defense, this 30-second cycle can be a tactical limit.
• Active Protection Systems (APS). Russian Trophy-class APS, Russian Arena-M, and Israeli Trophy on Western tanks can detect and shoot down a diving Javelin. FGM-148F2 introduces a modified flight profile partly to counter this.
• Battery and electronics burden. Two-person teams carry not just the missile but spare CLU batteries and BCUs, adding weight on long patrols.

The future: Javelin Block 2 and JAGM-F

Block II’s 4,000 m range — a 60 percent jump — restores the parity Javelin lost to longer-reach systems like Spike LR2 and Kornet. Looking further, the U.S. Army’s Joint Air-to-Ground Missile – Family (JAGM-F) program, also Lockheed Martin-led, aims to derive a longer-range, multi-mode-seeker successor that can be fired both from helicopters and ground tubes. JAGM-F is funded for technology demonstration through 2028.

Why Javelin matters

The Javelin proved that infantry, properly equipped, can stop armor cold. It rewrote NATO infantry doctrine, restored anti-tank weapons to the top of every Western army’s procurement list, and — in the rubble of Mariupol, Kherson and Bakhmut — became the most photographed, painted and meme-celebrated weapon of the 21st century so far. With Block II just entering service and production accelerating, Javelin will define the man-versus-tank battlefield well into the 2030s.