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Defense tech startup has raised another $200 million and acquired a small battle simulation company, . The deals follow on the heels of a record-setting year for venture investment into defense tech startups, per Crunchbase data.

and led the Series D funding for Honolulu-based Onebrief. Investors including 1, and joined. An updated valuation was not reported, but the company raised its just seven months ago at a $1.1 billion pre-money valuation, per Crunchbase.

Onebrief has now raised $311 million in total, per Crunchbase data. Along with the funding, the company acquired , a startup that makes simulation and wargaming software for the military and raised a $5 million seed round in 2023.

The company’s AI-driven collaborative and planning software is used by the to design, coordinate and brief complex military operations more efficiently, functions previously done on paper, through email and hand-written notes.

“Staffs are too slow. They’re just too slow for how fast our adversaries move now; they’re too slow for how complex the modern battlefield is. We need things to move hundreds of times faster than they do, and that takes automation,” Onebrief CEO , a former officer, told Axios.

With conflicts brewing around the world, venture investment in defense tech startups has soared in recent years, Crunchbase data shows. Funding to VC-backed startups in defense — defined by us as the industries of military, national security and law enforcement — hit $7.7 billion across close to 100 deals in 2025, per Crunchbase . That was a record high for investment in the space and more than double 2024’s tally.

Related Crunchbase queries:

Related reading:

• Sector Snapshot: Defense Tech Funding Hits Record High

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