After years of research, testing, and technological experimentation, the U.S. Marine Corps has officially committed to integrating unmanned ground vehicles (UGVs) into its future force structure.

At the Modern Day Marine conference held in Washington, D.C., Lt. Col. Scott Humr, deputy for the Marines’ Intelligent Robotics and Autonomous Systems program, confirmed that the Corps is actively developing a requirements document for what it is calling a "multi-purpose UGV."

While the timeline for publishing the document is still undetermined, the Corps' commitment to UGVs marks a pivotal shift in its approach to robotics and battlefield automation.

“We see this as an important piece of how we envision robots working with robots,” Humr said during the conference, emphasizing the broader strategic integration of robotics across multiple operational domains.

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The Marine Corps’ interest in unmanned logistics platforms is not new. For over a decade, it has tested various concepts for robotic mules capable of transporting gear and weapons.

Early designs from the Marine Corps Warfighting Lab even featured four-legged, animal-like configurations. However, the Corps now appears to be taking a more practical approach—by leveraging technologies and platforms already in development with the U.S. Army.

In 2023, a significant step was taken when Marines from the 3rd Littoral Logistics Battalion in Hawaii joined forces with the U.S. Army and the South Korean government to evaluate the Hanwha Arion-SMET, a Korean-made UGV prototype.

The two-week foreign comparative test focused heavily on the vehicle’s artificial intelligence and machine learning capabilities.

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Marine officials at the time referred to the event as “a critical juncture in the Corps’ exploration of advances in unmanned technologies.”

The evaluation underscored how UGVs can play a crucial role in contested environments by reducing risks to personnel while maintaining supply lines and operational tempo.

As future battlefields grow more complex and dispersed, the ability to autonomously deliver logistics and conduct surveillance becomes increasingly vital.

Separate from the Arion-SMET initiative, the Corps has also been working with manufacturer Rheinmetall since 2023. The company has supplied autonomous UGVs outfitted with remotely operated weapons stations for testing.

These developments reflect a growing trend toward versatile, multi-role platforms that can provide both logistical support and battlefield defense.

But rather than develop a completely independent platform from scratch, the Marine Corps now intends to align closely with the Army’s efforts.

The Army has made significant progress in its Small Multipurpose Equipment Transport (SMET) program, awarding contracts to American Rheinmetall Vehicles and HDT Expeditionary Systems.

A full production contract—potentially exceeding 2,000 units—is expected to be awarded in fiscal year 2027.

“A lot of the work they’ve done is like 90% of what we need. And so we’re not going to reinvent the wheel, as it were,” Humr told Marine Corps Times.

“Now we just need to move out on developing the annexes, do the materiel change requests, and just start getting things out there.”

The decision to follow the Army's lead allows the Marine Corps to expedite its acquisition timeline and reduce costs while benefiting from an already mature development process.

Still, Humr made clear that the Corps will tailor the platform to its own operational needs, using a “family-of-systems” approach that integrates ground and aerial unmanned assets.

“We love to see [unmanned aerial vehicles] interfacing with ground platforms and taking loads … containers, whatever, and leaving the Marine out of the loop, as it were, and delivering those systems autonomously,” he said.

That vision reflects a future where unmanned systems—not Marines—are sent into high-risk logistics and reconnaissance scenarios.

With enhancements such as counter-unmanned aerial systems (C-UAS) protections and perimeter security features, these UGVs could autonomously operate near combat operations centers or deeper into hostile territory.

“I think those are going to be very critical for logistics, for sensing, for communications, [intelligence, surveillance and reconnaissance] etc., logistics,” Humr added.

“We need to develop the requirement a little bit more and ensure that we get it out there quickly, and make sure we have the funding to support that as well. I think we’ll get that.”

As the Marine Corps finalizes its UGV requirements and prepares to launch the next phase of development, its alignment with the Army’s existing efforts suggests a more collaborative and streamlined path forward.

For now, the robotic mule is no longer just a concept—it’s becoming an integral component of tomorrow’s battlefield.

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