S26 Unmanned Vehicles Begin Field Training Exercises
The 2nd Cavalry Regiment is testing autonomous ground robots to carry heavy equipment and assist in casualty evacuations.
Updated on Oct. 24, 2026 in Robotics
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The 2nd Cavalry Regiment has begun field testing the S26 Stoat, an unmanned ground vehicle designed to support logistics in rugged environments. The regiment recently received three of 26 planned units and successfully used the robots for casualty evacuation and equipment transport.
Why it matters
By offloading heavy equipment or stretchers from dismounted infantry to an autonomous or remote-operated platform, this system aims to mitigate the physical strain on soldiers during long-range field operations.
The S26 Stoat utilizes a modular design where each wheel contains an independent motor, controller, brakes, and battery. The platform maintains mobility even if two wheels are punctured, and has demonstrated the capacity to tow a 24,040 kg truck despite its own 227 kg mass.
The players
2nd Cavalry Regiment
A U.S. Army armored cavalry unit based in Vilseck, Germany, currently testing autonomous logistics systems.
AZAK
A developer of autonomous ground robotics based in Denver, Colorado, responsible for the S26 platform.
The details
Soldiers operate the S26 Stoat using a handheld controller to navigate behind the unit, though the system also supports autonomous navigation. The modular architecture functions by distributing propulsion and power hardware directly into each wheel unit, allowing for continued operation during partial wheel failure. The Stoat configuration specifically utilizes a four-wheel frame optimized to carry mortars, ammunition, or stretchers.
Timeline
October 2026 (week prior): The 2nd Cavalry Regiment received the first three vehicles.
October 21, 2026: The regiment used the robot for casualty evacuation.
March 2026: AZAK displayed a second-generation version at AUSA Global Force.
The Tech Race
This deployment reflects a broader shift toward integrating autonomous multi-role ground vehicles into infantry platoons. The S26 Stoat moves past experimental prototypes showcased earlier this year at the AUSA Global Force symposium into actual field exercise integration.
The 2nd Cavalry Regiment is currently utilizing the first three delivered units at the Grafenwoehr Training Area. These robots represent an immediate change in logistics capabilities for infantry units by allowing transport of heavy gear across difficult terrain where traditional vehicles cannot reach.
The takeaway
The deployment of the S26 Stoat signals a practical shift toward field-ready autonomous logistics capable of towing massive loads relative to their own weight. Observers should track the upcoming receipt of the remaining 23 vehicles to see how the regiment scales this technology beyond early testing.
Further reading
For more on the latest advancements in autonomous mobility systems, visit our Robotics section.
Source note: This article includes information reported by Defence Blog.
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