Welcome back to the #35 edition of The New Defense Post!

In this edition, we’ll cover:

  • Spotlights: Castelion Wins $105M Navy Contract to Field Blackbeard, the First Carrier-Launched Hypersonic Strike Weapon; SteelRock Technologies: How a Bootstrapped London Startup Won a U.S. Marine Corps Urgent Drone-Jamming Contract; KBR and Tagup Deploy AI Logistics Decision Engine Across U.S. Military Operations

  • Fundraising News of the Week: defense tech rounds confirmed within the 7-day window.

  • Bonus Section: The Sustainment Black Hole: Why defense Logistics Is Europe's Most Underbuilt Startup Category

Spotlights

1. Castelion Wins $105M Navy Contract to Field the World's First Carrier-Launched Hypersonic Strike Weapon

Photo Credit: Castelion

On April 24, California startup Castelion was awarded a $105 million contract by the U.S. Naval Air Warfare Centre Aircraft Division to integrate its Blackbeard hypersonic strike weapon onto the F/A-18E/F Super Hornet and achieve early operational capability by 2027. The contract covers system safety and certification testing, flight testing, and full carrier-based integration — the last major hurdle before a volume buy decision. It follows a $49.9 million Navy contract from February 2026, meaning Castelion has accumulated $155 million in Navy contracts in under three months. (Castelion) (Reuters) (defense Blog)

Castelion was founded by former SpaceX executives who carried the same manufacturing philosophy across domains: automotive-grade commercial components instead of bespoke military-spec parts, rapid iteration over specification lock, and design-for-production from day one. Blackbeard is the first U.S. hypersonic system engineered from inception for industrial-rate output and commercial unit cost. Pentagon budget documents released this week project 4,500 air-launched hypersonic missiles for F/A-18s over five years at an average unit cost of approximately $384,000 — a remarkably low figure for hypersonic-class weapons. (Global Defense Corp)

To support anticipated production orders, Castelion has privately funded Project Ranger, a $250 million manufacturing campus in New Mexico being built entirely with company capital, targeting capacity for thousands of Blackbeard missiles annually by the end of 2027. Live fire tests will take place in the Indo-Pacific Command area of responsibility — not a domestic range, but the actual operational theatre. (defense Blog)

🗣 Sean Pitt, Co-Founder and COO, Castelion: "The most sacred targets in our engineering process are schedule and affordability. That forces more creative solutions — instead of waiting 52 weeks for a space-rated computer, we use automotive-grade components backed by tens of billions in commercial investment annually, and they work." (Reuters)

📰 Our Take: The Castelion story is the clearest live demonstration yet of what the neo-prime model looks like at scale. Founded by people who built rockets, funded through venture, and now holding $155 million in Navy contracts in three months — that trajectory is what the European hypersonics ecosystem doesn't yet have an equivalent of.

Anglo-German Hypersonica hit Mach 6 in its first test flight in February, raised €23.3 million in Series A funding, and described a modular architecture that reduces development costs by over 80% compared to conventional approaches. On paper, it's executing the same cost-first philosophy as Castelion. The gap is everything that comes after the prototype: government traction, a production strategy, and a procurement pathway that compresses the timeline from test to fielded capability.

2. SteelRock Technologies: How a Bootstrapped London Startup Won a U.S. Marine Corps Urgent Drone-Jamming Contract

Photo Credit: SteelRock Technologies

On April 24, U.S. Marine Corps Systems Command in Quantico awarded SteelRock Technologies of London a $9,5M urgent-authority contract for NightFighter Mini counter-drone jammer systems and associated spares, under the Marines' Organic-Counter small Unmanned Aerial Systems (O-CsUAS) programme. Delivery is required by August 25 — four months from award. The entire contract value was obligated at award using FY2024 Marine Corps procurement funds. All work will be performed in London. (U.S. DoW Contracts) (defense Blog)

SteelRock Technologies was founded in 2016 by Rupert English, a former UK special operations veteran, and has never raised disclosed VC funding. The company is bootstrapped, staffed with ex-UK Elite Forces personnel, and manufactures in Britain.

The NightFighter Mini — the most compact system in SteelRock's product family — weighs 2 kilograms with battery installed, measures 25 by 15 by 19 centimetres, and is operated by a single Marine as a weapon-mounted or sidearm-carried system. It covers four preset radio frequency bands, including Wi-Fi and military spectrum. Effective range is Visual Line of Sight: if the operator can see the drone, the system can engage it. (SteelRock Technologies)

The VLOS constraint is a genuine limitation: as adversaries shift to pre-programmed autonomous drones that don't rely on live RF links during flight, jamming-only effectors face a growing capability gap. That gap is where the next generation of C-UAS startups should be building.

📰 Our Take: Counter-drone "jamming guns" are considered quite ineffective when it comes to frontline usage. Currently, they aren't used all that much in Ukraine, and they are heavy and expensive.

Needless to say, they are obviously ineffective when there is a last-mile targeting system in place and when the drone has advanced autonomy features.

3. KBR and MIT-Founded Tagup Deploy AI Decision Engine Across U.S. Military Logistics

Photo Credit: Tagup

On April 21, KBR's Mission Technology Solutions division announced a strategic alliance with Tagup, a defense technology company founded at MIT, to integrate Tagup's Manifest platform into KBR's global military logistics operations. Initial deployments target U.S. Army and Marine Corps ground equipment sustainment.

The Manifest platform uses Generative Reinforcement Learning (GRL) to simulate millions of logistics scenarios simultaneously, and output recommended sustainment plans in seconds, with a conversational AI interface that lets operators query trade-offs in plain language. (Globe Newswire) (Executive Biz)

The background figure that makes this announcement significant: the U.S. Defense Logistics Agency currently achieves approximately 60% accuracy in demand planning — meaning four in ten items are either over-ordered or under-ordered against actual need.

Maj. Gen. David Sanford, DLA's director of logistics operations, described the gap publicly in January, noting the target is to push accuracy toward 85%. KBR's Tagup alliance is one of several AI-driven initiatives targeting that gap. (Federal News Network)

🗣 Jon Garrity, CEO, Tagup: "Sustainment at KBR's scale generates enormous decision volume: thousands of competing resource trade-offs, every day, across global theatres. Manifest gives KBR the ability to turn that complexity into a quantitative advantage by continuously modelling the logistics environment, evaluating courses of action against real constraints and surfacing the decisions that protect readiness before problems compound." (Globe Newswire)

📰 Our Take: Tagup is a defense startup that went from MIT to a KBR enterprise alliance covering U.S. Army and Marine Corps logistics. That's a meaningful B2G traction signal, and the platform architecture, GRL plus conversational AI for sustainment trade-offs, is genuinely novel applied to military supply chains.

For European founders, this story points to a gap that's even wider on this side of the Atlantic. European militaries are scaling defense budgets at a pace, but their logistics infrastructure is, if anything, more analogue than the U.S. baseline.

The DLA runs 55 AI models in production and has an AI Center of Excellence. European defense logistics agencies don't have equivalents. The market for predictive sustainment, parts demand forecasting, and maintenance optimisation tools is wide open across NATO allies.

Other News

Fundraising News

Amount

Name

Round

Category

$105M

Hypersonic Strike Weapons

$9.5M

Portable C-UAS / RF Jamming

$10.4M

ISR Drone Systems (Ukraine)

Pilotix is a European drone technology company building end-to-end solutions, from high-performance drones and flight electronics to advanced software systems. With in-house production and high-precision assembly capabilities, Pilotix delivers reliable, scalable platforms for both civilian and defense applications, including surveillance, industrial operations, and specialised missions.

Use code HOBBYDRONEF1 for a discount.

Bonus Section — The Sustainment Black Hole: Why defense Logistics Is Europe's Most Underbuilt Startup Category

Photo Credit: RUNE Technologies

Fun fact: the U.S. Defense Logistics Agency, one of the most sophisticated military supply chains on Earth, currently achieves 60% demand planning accuracy. That means roughly four in ten procurement decisions miss the mark, resulting in either stockpiles of parts nobody needs or critical shortages of the ones they do. The DLA manages supply to every branch of the U.S. military across every continent, and it's building 55 AI models in production to close the gap. The target is 85% accuracy. (Federal News Network)

European military logistics starts from a much weaker baseline. defense budgets across the continent are growing at historic rates, but the logistics infrastructure supporting them hasn't kept pace. The platforms are being ordered, but the sustainment systems to keep them operational in a high-tempo conflict are years behind.

That's not a political observation. It's an engineering one: modern defense platforms generate enormous maintenance data, and without predictive tools that can ingest and act on it, readiness degrades faster than any adversary needs to act.

The KBR-Tagup deal, which we cover in Spotlight 3, is a useful model for what the European gap looks like from the other side. Tagup's Manifest platform does three things simultaneously: it simulates millions of logistics scenarios under real constraints, ranks them by feasibility and readiness impact, and exposes the trade-offs via a conversational interface.

That architecture, GRL plus constraint satisfaction plus human-readable outputs, is what it takes to turn a military logistics operation from reactive to anticipatory. The market for AI in defense logistics is valued at $2.73 billion globally in 2026 and projected to reach $5.31 billion by 2030. Europe's share of that market currently has almost no startup-native participants. (Research and Markets)

European NATO members face identical sustainment challenges to the U.S.: parts demand forecasting, maintenance scheduling under personnel and facility constraints, and spare parts inventory optimisation across distributed depots.

The same AI tooling that KBR is deploying for the U.S. Army could be adapted for Bundeswehr ground vehicles, French Army maintenance operations, or the Baltic states' expanding defense infrastructure. The procurement pathway in Europe is harder, but DIANA, EDF sub-calls, and national innovation units like France's AID are all creating on-ramps that didn't exist three years ago. The question is who's building the product.

defense logistics is unglamorous, which is exactly why it's underbuilt. The competitive dynamics of the European defense tech market have so far concentrated capital and talent in strike drones, interceptors, and autonomous platforms. Those are real opportunities, but they're crowded.

For founders with backgrounds in supply chain, operations research, or industrial AI, this is a cleaner wedge into defense than most: the problem is well-defined, the data is available (if you can access it), and the customer has a readiness imperative that doesn't go away.

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