A small unmanned armored vehicle, loaded with 60 kg of explosives, moves toward its target on its own. The idea might seem lifted from a science-fiction movie, but the Wehrmacht did indeed put it into service as early as 1942. Its name: the Goliath. Its weakness: a simple wire.
- The Goliath, a tiny German remote-controlled tank on a 650-meter cable, carried 60 kg of explosives and could be neutralized simply by cutting the wire, as the Poles did in Warsaw in 1944.
- Produced by Borgward and later Zündapp in more than 7,500 units between 1942 and 1944, the device cost about 3,000 Reichsmarks per unit, but remained too slow and fragile to live up to its military promises.
- This tension between innovation and the vulnerability of the tether is echoed today with fiber-optic FPV drones used in Russia and Ukraine, which circumvent jamming but leave polluting cables on the battlefield.
- A miniature tank to destroy without risking a single soldier
- 650 meters of electric wire, the Achilles’ heel of a revolutionary weapon
- Borgward, Zündapp: two manufacturers for a device quickly outpaced by the war
A miniature tank to destroy without risking a single soldier
Imagine a small tracked box, barely taller than a knee, gliding silently toward an enemy bunker. No operator aboard, no soldier exposed to fire. That is precisely the principle of the Goliath, officially named Leichter Ladungsträger Sd.Kfz. 302 by the German army.
Its mission, in one sentence, was to charge toward a target, whether it was an enemy tank, a fortification, or a cluster of entrenched soldiers, and then explode on contact. A one-use weapon, designed to sacrifice machinery rather than human lives.
The concept did not originate in German offices. It drew on a French prototype found near the Seine in 1940, attributed to engineer Adolphe Kégresse, renowned for his work on tracked vehicles. The Germans adopted the idea, refined it, and industrialized it for their own needs.
Two electric motors of 2.5 kW propelled the device to about 10 km/h, a speed that seems meager today but was sufficient to ambush a fixed target discreetly. All for a 60 kg explosive charge, capable of pulverizing a tank or razing a section of wall.
650 meters of electric wire, the Achilles’ heel of a revolutionary weapon
On paper, the Goliath looked like a formidable innovation. In the battlefield reality, its design concealed a glaring, simple yet sly flaw.
The operator guided the vehicle from a housing equipped with a broom-handle-style grip, connected by a three-strand cable unwound from a spool housed at the rear of the vehicle. This 650-meter wire provided direction, forward and reverse motion, and the firing of the charge.
In other words, without this wire, the Goliath was nothing more than a stationary, harmless metal box. An enemy soldier did not even need to aim at the device itself: cutting the cable was enough to neutralize the entire machine.
Polish troops understood this perfectly during the Warsaw Uprising in 1944. They quickly identified this vulnerability and severed the cables remotely, rendering several of these little tanks that were meant to sow destruction harmless. Produced by Borgward and later Zündapp, the Goliath ran at around 10 km/h and depended on a 650-meter control wire that could be cut by a single shell fragment.
Radio-controlled versions were indeed developed to free themselves from this cumbersome tether. But they arrived too late in the conflict and suffered another major flaw: the Allies could jam the control frequency, making the device just as vulnerable, albeit by a different method.
Borgward, Zündapp: two manufacturers for a device quickly outpaced by the war
The production of the Goliath mobilized several German manufacturers, proof that the army was counting on this concept despite its obvious limitations.
The early models, equipped with two electric motors, rolled out of Borgward’s factories in Bremen. The problem: each unit cost around 3,000 Reichsmarks, a hefty sum for a single-use weapon. Not to mention the difficulty of recharging or maintaining these motors directly on the front, far from any infrastructure.
Facing these constraints, production evolved. The electric Sd.Kfz. 302 reached 2,650 units between April 1942 and January 1944. It was later supplanted by more robust petrol-powered variants: the Sd.Kfz. 303a, produced in 4,604 units, followed by the 303b, at 325 units, manufactured notably by Zündapp.
These figures are impressive in their volume, but they also reveal a more nuanced reality. The Goliath never truly met its battlefield promises. Too slow, too fragile, too dependent on a wire or a radio frequency easily countered, it often disappointed the expectations placed in it by the German high command.
The history of this weapon illustrates a classical tension in military innovation: a bold idea, hampered by technical constraints that the combat context always tends to reveal.
What stands out in hindsight is the persistence of this technological dilemma almost eight decades later. Since spring 2024, the Russian forces, followed in 2025 by the Ukrainian forces, have massively deployed FPV drones connected by optical fiber, a solution designed precisely to evade electronic jamming that, according to General Pierre Schill, Chief of Staff of the French Army, disables about 75% of ordinary drones. The first model used at scale, the Knyaz Vandal Novgorodsky, demonstrated its capabilities in the Kursk region as early as August 2024, flying up to 60 km/h without its fiber breaking within a 10-kilometer radius, according to a specialist cited by RFE/RL. But as with the Goliath, this technology leaves tangible traces on the ground: the Conflict and Environment Observatory now warns about the accumulation of these abandoned cables, a new form of plastic pollution that researchers from the National Museum of the History of Ukraine even found interwoven with bird nests. The wire, whether copper or glass, remains, indeed, a tethering liability for anyone seeking to wage distance warfare.
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