# Defense tech
> The wave of US venture-backed startups building autonomous weapons, AI-enabled sensing and dual-use hardware for militaries, now the fastest-growing segment in global venture capital.

**Meta:** type: reference · date: 2026-07-03 · heads:  · 4 takes · 4 lenses · 2 regions

## What it is

Defense tech is the sector of venture-backed startups building autonomous weapons systems, AI-enabled intelligence platforms, counter-drone hardware, and dual-use software for military and government customers, primarily in the United States. It is structurally distinct from the traditional US defense industrial base (Lockheed Martin, Raytheon Technologies, Northrop Grumman, Boeing Defense) in three ways: software-first architecture, equity funding rather than cost-plus government contracts, and iteration cycles measured in months rather than years. Core subsectors include autonomous air, sea, and ground vehicles; counter-drone systems; AI-driven targeting and surveillance; electronic warfare; and advanced manufacturing designed to scale munitions production rapidly. The category blurs into dual-use AI, satellite imagery, and cybersecurity, where the same product serves both commercial and classified government customers.

## History

Silicon Valley largely avoided defense work through the 2000s and into the 2010s, a posture made explicit in 2018 when Google withdrew from the US Pentagon's Project Maven artificial-intelligence contract after employee protests. The shift began around 2019 to 2021, driven by the US military's explicit requests for commercial software expertise and by Russia's full-scale invasion of Ukraine in February 2022, which sharpened demand among NATO-aligned governments for rapidly deliverable autonomous and electronic warfare capability. Anduril Industries, founded in 2017 by Oculus VR co-founder Palmer Luckey in Costa Mesa, California, was the clearest early catalyst: it raised roughly US$1.5bn by 2021, arguing that traditional US defense primes were structurally too slow to field novel capability. By 2023, Andreessen Horowitz had formally established its American Dynamism portfolio, and Founders Fund had made defense its central thesis. General Catalyst, Sequoia Capital, Khosla Ventures, and Thrive Capital followed with explicit mandates through 2024.

## Current state

By mid-2026, defense tech is the fastest-growing segment in US venture capital by total dollars deployed. The sector raised US$9.6bn in all of 2025, a record at the time. US$14.6bn had been raised in the first five months of 2026 alone, per Crunchbase. Three rounds account for roughly 60 per cent of that sum: [Anduril's US$5bn Series H at a US$61bn valuation](/zh/n/anduril-series-h-2026) in May 2026, led by Thrive Capital and Andreessen Horowitz; Shield AI's US$2bn Series G at a US$12.7bn valuation in March 2026; and Saronic's US$1.75bn Series D at a US$9.25bn valuation. [Mach Industries raised US$300m in June 2026 at a US$1.8bn valuation](/zh/n/mach-industries-series-c-2026), quadrupling in under a year on a model that emphasizes flexible manufacturing over a single-platform bet. [The sector's H1 2026 total already exceeds the 2025 full-year record by more than 50 per cent.](/zh/n/defense-tech-funding-record-2026)

Global military expenditure reached US$2,887bn in 2025, the 11th consecutive year of real-terms growth (SIPRI). European real-terms growth of 14 per cent in 2025 is creating new procurement pools for startups seeking non-US government revenue. The US Pentagon is now actively encouraging VC participation, streamlining eligibility for small-business innovation grants and citing commercial technology as indispensable for near-peer competition.

## Relationships

The sector sits between Silicon Valley capital networks (a16z, Founders Fund, Thrive Capital, Sequoia) and US government procurement channels including the US Pentagon, DARPA, and allied militaries under Foreign Military Sales. Anduril and Shield AI occupy the autonomous-systems platform layer. Palantir Technologies, listed on the NYSE since 2020, functions as the sector's most liquid public-market proxy for investor sentiment. Traditional US defense primes (Lockheed Martin, Raytheon) are simultaneously customers, partners, and potential acquirers. A second tier of smaller companies in AI targeting, satellite imagery, electronic warfare, and undersea autonomy forms the startup layer beneath the platforms.

## What to watch

Whether Anduril files for a US IPO, which would set the first large-cap public-market benchmark for the category and test retail investor appetite for venture-scale defense companies. How the US Pentagon's new VC-inclusion programs evolve in scope and whether the European Union and Indo-Pacific allies create parallel procurement fast lanes. Whether capital concentration around five to ten platform companies triggers an acquisition wave that consolidates the startup layer. And whether binding international governance frameworks for autonomous weapons, which multiple UN working groups are debating as of mid-2026, materially alter investor risk models.

## Regional takes (batched by bias / lens)

### institutional research
- **SIPRI** (International, en) — SIPRI April 2026 fact sheet: global military expenditure reached US$2,887bn in 2025, the 11th consecutive year of real-terms growth, up 2.9% and 41% over the decade; contextualizes the demand driving defense-tech investment.
  Source: https://www.sipri.org/publications/2026/sipri-fact-sheets/trends-world-military-expenditure-2025

### venture / data
- **Crunchbase News** (United States, en) — Sector snapshot: defense-tech startups raised US$14.6bn through May 2026, surpassing the 2025 full-year record of US$9.6bn; capital is concentrating in platform companies large enough to acquire earlier-stage players, with VC exits coming into view for the first time.
  Source: https://news.crunchbase.com/defense-tech/startup-venture-funding-all-time-record-ai-anduril/

### company announcement
- **Anduril Industries** (United States, en) — Official release: Anduril closes a US$5bn Series H at a US$61bn valuation led by Thrive Capital and Andreessen Horowitz, bringing total capital raised to over US$11bn; proceeds directed to manufacturing capacity, R&D and infrastructure.
  Source: https://www.anduril.com/news/anduril-announces-usd5b-series-h-raise

### policy / Pentagon
- **Washington Times** (United States, en) — Reports the US Pentagon's 2026 structural shift to actively encouraging VC participation in defense programs, including streamlined SBIR eligibility for venture-backed companies, quoting officials who call commercial technology indispensable for near-peer competition.
  Source: https://www.washingtontimes.com/news/2026/jun/18/investment-defense-tech-soaring-pentagon-encourages-venture/

## Across the graph
- Related: [[defense-tech-funding-record-2026]], [[mach-industries-series-c-2026]], [[anduril-series-h-2026]]
- Entities: Defense Tech, Anduril, Shield AI, Palantir, Org:a16z, Org:founders Fund

---
Canonical: https://rbtfl.xyz/zh/n/defense-tech-dossier