Forterra raises $238M Series C to build autonomous defense vehicles and open-architecture battlefield systems

Forterra has closed a $238 million Series C, positioning itself as a ground-up defense technology builder focused on autonomous and distributed systems for vehicle-mounted battlefield applications. The raise signals growing investor appetite for defense-native autonomy platforms that operate at the tactical edge rather than adapting commercial self-driving technology for military use.

“We announced a $238,000,000 Series C today. We're building distributed systems for defense starting from the ground up. We're focused on building stuff that primarily goes on vehicles... We want to be able to equip those warfighters with technology and distributed compute at the tactical edge that enables vehicles to be self-driving, act as nodes and relays, launch loitering munitions, put radars into place to detect aircraft or detect enemy shipping.”

The company's core thesis centers on equipping warfighters with distributed compute and open-architecture systems that turn vehicles into multi-role nodes. Capabilities in development include autonomous driving, communications relay, loitering munition deployment, and radar systems capable of detecting aircraft and enemy shipping.

Forterra's emphasis on building from the ground up, rather than retrofitting, reflects a broader shift in defense contracting toward purpose-built software and hardware stacks. The vehicle-centric approach allows a single platform to serve ISR, electronic warfare, and kinetic roles simultaneously, a configuration that aligns with the Pentagon's push toward attritable, distributed lethality.

With the Series C now closed, the company enters a capital-intensive phase of hardware development and field testing. The $238 million figure puts Forterra among the better-funded autonomous defense startups, competing in a segment that includes Shield AI, Ghost Robotics, and Joby-backed adjacent ventures for Pentagon contracts and program-of-record status.