Five metric tons of cargo. 1.7 kilometres of mud, water, boulders and narrow forest track. No driver in the cab.
On 29 October, Norwegian company UGV Defence ran its FLEX L12 heavy tracked robot through that course at Camp Rødsmoen, near Rena in eastern Norway. About 100 people watched, mostly officers from the Norwegian and Swedish armed forces, along with defence-industry representatives.
The payload class is the headline: the FLEX L12-L is rated for 12 tonnes, roughly three times a typical battlefield unmanned ground vehicle (UGV).
The autonomy claim is narrower than it sounds: SLAM navigation without GPS and convoys of up to 15 vehicles, all according to the company, on one 1.7 km course.
The timing is commercial, not operational: the civilian tracked chassis is already in production, while deliveries of the militarised version are planned from the first quarter of 2027.
The event doubled as the launch of the Nordic Autonomous Mission Platform, a group of companies building equipment around one chassis. The partners listed by UGV Defence are Kongsberg, BAE Systems, Hammar, Safe-Tec, SKJOLDR and Nordic Shelter.
What the 1.7 kilometres actually contained
Chief executive Carl Ivarsson described the route on social media: steep inclines, mud, water crossings, large rocks, narrow passages and sharp turns, all driven without a human at the controls. The vehicle carried five tonnes while doing it.
Loaded mass is the number worth pausing on. Five tonnes is 42% of the L12-L's 12-tonne rating, and the company's own figures put ground pressure at 3.5 psi empty and 6.2 psi with a load. Every kilogram adds rolling resistance, braking distance and the cost of a perception error.
Rødsmoen is not a random field. The camp's training area hosted a 10-day European Defence Agency trial of armed ground robots in February, which makes it a sensible stage for a platform aimed at Nordic militaries. It is also a controlled stage: a prepared off-road course is easier to instrument than a contested route.
FLEX L12-L payload rating
Dump-body rating 25,000 lb (11,340 kg); bare chassis 28,793 lb (13,060 kg) per company specs · UGV Defence, 2026
Mass is the multiplier
A five-tonne load changes the autonomy problem in unglamorous ways. The perception stack has to see further because stopping takes longer. The suspension has to keep sensors level on a 31° grade. The drivetrain has to deliver torque without cooking a battery pack that also powers the payload.
UGV Defence builds the FLEX L12 on a civilian tracked carrier and has been reworking it for military use. The company lists a top speed of 25 km/h and a stated range of up to 800 km on a diesel-electric drivetrain.
Control is described as three-mode: a Starlink terminal, a direct radio channel, or fully autonomous operation. In electronic warfare or GPS-denied conditions the platform falls back to simultaneous localisation and mapping (SLAM) navigation, scanning the surroundings and building its own map. The software can also link up to 15 platforms in a master-slave convoy with centimetre-level station keeping.
| Parameter | FLEX L12-L (Load) | FLEX L12-P (Power) |
|---|---|---|
| Payload capacity | ✔ 12 t | 9 t |
| Battery | 126 kWh / 380 V | 250–500 kWh / 800 V |
| Generator | 180 kW (CAT C7.3) | 340 kW (CAT C9.1) |
| Combined output | 482 hp | 650 hp |
| Top speed / range | 25 km/h / up to 800 km | 25 km/h / up to 800 km |
| Delivery | from Q1 2027 | from Q3 2027 |
Company specifications, UGV Defence product page, 2026.
The payload arithmetic
Heavy UGVs are usually sold on the cost of a soldier, which is the wrong comparison. A 12-tonne tracked carrier does not replace a person. It replaces a truck, a driver and the decision about whether that truck should be on a route at all.
On pure logistics maths, a conventional truck wins every time. It carries more, costs less and has a maintenance network measured in decades. UGV Defence's pitch only works where the route itself is the risk: the last few kilometres into a position, a resupply run through terrain that would slow a wheeled convoy, or a power drop that cannot wait for a generator trailer.
The variant split shows how the company expects buyers to choose. The L12-L keeps the full 12-tonne payload and a 126 kWh battery. The L12-P gives up three tonnes of cargo, moving to a 250–500 kWh pack and a 340 kW generator, enough to run equipment on site rather than simply move it there.
That is a narrower market than a headline about autonomy suggests. It is also a more defensible one, because the buyer is comparing a platform against a convoy risk, not against a cheaper robot with a smaller payload.
The partner stack is the product
A heavy robot without payloads is a flatbed. That is why the Nordic Autonomous Mission Platform matters more than the demo footage: Kongsberg and BAE Systems bring weapons and mission systems, Hammar brings sideloader handling, and the smaller partners cover shelters and field support.
“The feedback from defence and industry representatives was very encouraging. More importantly, the day demonstrated what can be achieved when leading Nordic defence companies bring together their expertise around a common autonomous platform.”— Carl Ivarsson, chief executive, UGV Defence
Ivarsson did not say which payloads were mounted on the vehicle during the run, and several partners showed their systems separately. That gap is the integration risk in miniature: a chassis can prove mobility on its own, while a deployable system needs every payload qualified against the same power, cooling and data budget.
Who is buying, and who else is selling
The audience was the sales pitch. Officers from two armed forces, roughly 100 attendees and a partner ecosystem on site point to a procurement conversation that is already underway. UGV Defence says the industrial base behind the project could support production of hundreds of vehicles, with first deliveries planned for the first half of 2027.
The competition is not standing still. Milrem Robotics, the Estonian maker of the THeMIS platform, now has its vehicles in programmes or service in 19 countries. As we wrote in October about Milrem's three-continent production push, the race is shifting from demonstrations to manufacturing footprint and local assembly.
Payload class is where UGV Defence differentiates. Most fielded UGVs carry a few hundred kilograms, enough for sensors, small weapons or casualty evacuation. A 12-tonne rating puts the FLEX L12 in logistics and mobile-power territory, where the buyer is a brigade staff rather than a squad leader.
What has to break next
Three things stand between this demo and a programme of record. First, qualification: military certification of an autonomy stack is still a slow, document-heavy process with few precedents for a vehicle this size. Second, contested-environment proof: one prepared course does not validate SLAM against jamming, decoys or a moving adversary. Third, production: a militarised configuration with an updated hybrid powertrain is still being prepared for series output, and the 2027 dates are company targets.
The commercial logic is clear enough. Armies want to move mass without exposing drivers, and heavy logistics is the least glamorous, most measurable place to start. Whether that logic survives contact with a procurement office is the open question.
Will heavy UGVs become a procurement category by 2028?
Probability: 55% — demonstration cadence and payload class are moving faster than certification, but budgets move slower than both.
🟢 Optimistic scenario (30%)
Consequences: UGV Defence becomes an acquisition target for a larger prime within 24 months.
🟡 Base scenario (50%)
Consequences: revenue grows, but the fully autonomous pitch waits for the next budget cycle.
🔴 Pessimistic scenario (20%)
Consequences: the heavy UGV market stays a niche for another five years.