Artillery Modernisation: K9, Krab, and HIMARS in CEE

Artillery’s Return as the Decisive Arm¶

The Ukraine war settled a debate that had been running through Western military theory since the 1990s: whether precision airpower had displaced tube artillery and rocket systems as the primary fires mechanism in high-intensity conflict. The answer, delivered by four years of combat at scale, was unambiguous. Artillery — tube howitzers, multiple launch rocket systems, and the ISR-fire integration architecture enabling them — has accounted for the majority of casualties on both sides of the line of contact. The International Institute for Strategic Studies estimated in 2023 that artillery fire caused over 70% of Ukrainian and Russian military casualties, a proportion consistent with major conventional wars of the 20th century.

This was not the lesson Western armies expected to relearn. The post-Cold War drawdown, accelerated after 2001 by the shift to counter-insurgency operations in Afghanistan and Iraq, had hollowed artillery corps across NATO. Field artillery was deprioritised, ammunition stockpiles were allowed to run down, and doctrine focused on precision strike with aircraft and cruise missiles rather than massed fires with tube artillery. The artillery school at Fort Sill contracted. Britain’s Royal Artillery was restructured multiple times, losing self-propelled guns. Germany maintained its M109A3 fleet at below-operational readiness for years.

Central and Eastern European armies, inheriting Soviet-doctrine fires structures, maintained proportionally more artillery than Western European peers — but the equipment was ageing and the ammunition stocks were calibrated for a lower-intensity scenario than Ukraine demonstrated. The 2022–2026 procurement surge is fundamentally a reconnection with fires-centric conventional doctrine, informed by battlefield data from a peer conflict.

The K9 Thunder: CEE’s Dominant SPG Platform¶

The South Korean K9 Thunder 155mm self-propelled howitzer has become the defining artillery platform for CEE NATO’s modernisation programme. Its penetration of the CEE market reflects the same production capacity and competitive pricing advantages that drove South Korea’s MBT and MLRS success — combined with a genuine capability edge over legacy alternatives.

The K9 fires NATO-standard 155mm/52-calibre ammunition — the same family as the Leopard 2’s Rheinmetall 120mm is to armour — to a maximum range of 40 km with standard extended-range full-bore ammunition, and 56 km with V-LAP (Velocity-Enhanced Long Range Artillery Projectile) rounds. Rate of fire reaches six rounds per minute for short burst and two rounds per minute sustained. The automated loading system allows a three-man crew to sustain fires that earlier self-propelled howitzers required six soldiers to maintain.

Estonia was the pioneer, ordering 12 K9 Thunder howitzers in 2018 and expanding to 18 delivered units — giving the Estonian Army its first indigenous long-range fires capability. Finland committed to 48 K9 Moukka (Finnish variant with arctic winterisation), with deliveries from 2017. Norway operates 24 K9 Vikings (Norwegian arctic variant). These Nordic and Baltic early adopters established the platform’s credibility within CEE defence communities before the 2022 surge.

Poland’s K9A1 programme is the programme-defining scale: 672 howitzers under contract with Hanwha Defence Korea and licensed co-production at Huta Stalowa Wola. The K9A1 variant incorporates upgraded ammunition handling, improved navigation, and compatibility with the K10 ammunition resupply vehicle — which travels with K9 batteries and provides automatic ammunition transfer under armour, dramatically reducing the exposure of crew during resupply. Romania has contracted for 54 K9 howitzers. Latvia and Lithuania are both in discussions for K9 acquisitions.

The Krab: Poland’s Indigenous 155mm Platform¶

The AHS Krab (Armoured Howitzer System Krab) is Poland’s own 155mm self-propelled howitzer, developed by Huta Stalowa Wola and in production since the mid-2010s. It combines a licensed AS90 Braveheart turret (originally developed by BAE Systems for the British Army) mounted on a modified K9 hull — a pragmatic hybrid that gave Poland a domestically assembled 155mm SPG while awaiting the full K9PL production ramp.

Poland donated 18 Krab howitzers to Ukraine in 2022, and those systems have been combat proven in the Donbas and Kherson theatres, where their NATO-standard ammunition (compatible with US and UK deliveries) and GPS/inertial navigation fire control have performed effectively in counter-battery and fire support roles. Ukrainian crews report the Krab’s accuracy and rate of fire as superior to legacy Soviet-calibre 152mm systems they had operated previously.

Poland is continuing Krab production alongside K9A1, with both systems equipping artillery brigades in different configurations. The Krab provides a domestic industrial anchor — HSW’s order books, production workforce, and subcontractor relationships depend on it — while the K9A1 provides scale and standardisation with Estonia, Finland, and Norway. The dual-SPG structure creates some logistical redundancy but also reflects the political economics of domestic defence industry.

HIMARS: Precision Rocket Artillery at CEE Scale¶

The M142 HIMARS (High Mobility Artillery Rocket System) has become the most politically salient Western artillery system of the Ukraine war — the deliveries of HIMARS to Ukraine in mid-2022, followed almost immediately by precision strikes on Russian logistics hubs, ammunition depots, and command posts at ranges beyond Russian artillery response, marked a tactical inflection point.

Poland’s 486-launcher HIMARS order, signed in 2023, is by far the largest non-US purchase in the system’s history. At approximately $20 million per launcher (including command and control integration, training, and initial ammunition), the contract value exceeds $10 billion. The scale reflects Poland’s intent to field HIMARS at Army corps level — as a strategic fires asset capable of engaging targets at 70+ km with GMLRS (Guided Multiple Launch Rocket System) and at 300+ km with ATACMS (Army Tactical Missile System) — rather than merely as a brigade supplement.

Lithuania received its first 8 HIMARS launchers in 2023, representing a significant capability uplift for an army that previously relied on towed 105mm howitzers for fire support. The Lithuanian HIMARS are positioned to cover approaches through the Suwalki corridor — the 65 km land link between Poland and Lithuania that is NATO’s most studied operational vulnerability — and to engage Russian logistics and assembly areas in Kaliningrad Oblast and Belarus.

Romania has contracted for 18 HIMARS, with deliveries from 2025. Positioned in eastern Romania, these systems can cover the northern Black Sea approaches and the Danube delta approaches from any Russian force operating from Crimea or occupied southern Ukraine.

Counter-Battery Radar: Seeing Before Firing¶

Effective artillery operations require counter-battery radar to locate enemy firing positions and provide correction data. CEE is fielding two principal systems: the Swedish ARTHUR (Artillery Hunting Radar) and the multinational COBRA (COunter Battery RAdar).

ARTHUR is a vehicle-mounted 3D surveillance radar capable of tracking incoming artillery rounds, rockets, and mortar bombs from first radar return to back-extrapolation of firing point, providing target location accuracy within 10 metres at 20 km. Poland, Norway, Sweden, and several other allies operate ARTHUR. Estonia has operated ARTHUR systems since 2005, making it one of the longest-standing users — experience that has informed its counter-battery training and doctrine.

COBRA — developed by Thales, Lockheed Martin, and EADS for the German, French, and British armies — is a heavier, longer-range system capable of tracking rounds out to 40–50 km and managing multiple simultaneous tracks. Poland operates COBRA within its artillery command structure.

Both systems feed data into NATO’s AFATDS (Advanced Field Artillery Tactical Data System) or compatible national C2 systems, enabling near-real-time fire missions against detected artillery positions. The Ukraine war demonstrated that counter-battery capability is existential: forces that can locate and destroy enemy artillery before it re-positions survive; those that cannot are attrited systematically.

CEE Artillery Systems 2026¶

Precision Munitions: GMLRS, Excalibur, and the Supply Constraint¶

The accuracy revolution in artillery has been driven by GPS and inertial navigation guidance packages that convert unguided shells and rockets into precision-guided munitions. Two principal rounds dominate CEE procurement and Ukrainian combat experience:

GMLRS (Guided Multiple Launch Rocket System) is the standard HIMARS/M270 precision rocket, delivering a 90 kg unitary or alternative warhead to targets at 15–70 km with 10-metre CEP accuracy. Over 50,000 GMLRS have been produced; Ukraine’s consumption rate has at times reached 500 per month. The production rate at Lockheed Martin’s Precision Fires facility is being expanded, but demand from Ukraine deliveries and CEE stockpiling orders creates competition for available rounds.

M982 Excalibur is a GPS/inertial guided 155mm projectile with 40 km range (standard) and sub-metre accuracy in GPS-supported environments. Produced by BAE Systems and Raytheon, it fires from any M198 or M777 towed howitzer, as well as SPGs including the K9. Several CEE allies have contracted Excalibur for their 155mm fleets, providing precision capability without the logistics footprint of HIMARS.

The ammunition supply constraint is structural: the 155mm shell shortage that emerged in 2023–2024 applies to both guided and unguided rounds. NATO’s European members collectively hold sufficient howitzers; they do not hold sufficient ammunition for a sustained high-intensity conflict. CEE factories (see european-defence-industry) are running extended shifts, but building ammunition inventory to war-reserve levels requires 3–5 years of sustained production at expanded rates.

Ukraine Attrition Lessons and CEE Doctrine¶

The Ukraine war’s attrition data has reshaped CEE artillery doctrine in several respects. Tube artillery in Ukraine consumes barrels at a rate requiring replacement every 2,000–3,000 rounds under sustained combat — compared to 10,000+ rounds in peacetime training conditions. CEE procurement authorities are now factoring wear-part stockpiles and barrel replacement contracts into SPG acquisitions. Hanwha’s K9 contracts with CEE buyers include maintenance packages explicitly calibrated for high-tempo use.

Forward observer doctrine has shifted toward drone-enabled target acquisition, with small commercial UAVs (DJI Mavic derivatives and military equivalents) providing battery-level surveillance that was previously dependent on helicopter or fixed-wing ISR. Poland, Estonia, and Lithuania have all invested in organic fires-UAV integration, equipping artillery batteries with their own reconnaissance drone elements rather than depending on higher-echelon ISR assets for targeting.

The intersection of procurement scale, nato-logistics sustainment, and the artillery attrition lessons from Ukraine means CEE is building the most capable land fires structure in Europe. Whether the ammunition, trained operators, and logistics chains to sustain it are in place before the Russian reconstitution timeline closes the window remains the central planning question.