The EMOC 120 mm mortar carrier system: a major breakthrough in indirect fire.

The EMOC is an advanced 120 mm mortar carrier system designed to transform the tactical mobility and precision of light artillery. Developed entirely by the Spanish company EM&E Group, this system combines cutting-edge mechanical engineering, advanced electronics, and state-of-the-art software. Its major advantage lies in its lightweight and compact design, enabling it to equip 4x4 vehicles with significant firepower without compromising their stability in any way.

Furthermore, this solution can be deployed and retracted in less than 20 seconds, while capable of firing three rounds in less than a minute. This capability represents a significant qualitative leap in tactical mobility, protection, and reaction speed, especially in an operational scenario where loitering munitions, FPV drones, and counter-battery radars have reduced the survival time of static mortar positions to just a few minutes.

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The new tube-mounted INS ensures the EMOC hits its target with perfect accuracy even when GPS is jammed or the vehicle moves during firing on rough ground. (Picture source: EM&E Group)

The war in Ukraine has highlighted just how vulnerable mortar and artillery units become once they open fire. Survival no longer depends solely on firing speed, but also on the ability to abandon the position and reposition as quickly as possible. 

Compared to towed mortar systems, EM&E Group’s EMOC mortar carrier system represents a revolution, as it eliminates the need for manual unloading, site preparation, baseplate excavation, and manual aiming procedures, effectively replacing heavy armored protection with a drastic reduction in exposure time. This concept is also aligned with current post-2022 European doctrinal debates on distributed fire and dispersed maneuver operations.

Advantages of the EMOC

The 120 mm EMOC incorporates an inertial navigation system (INS) integrated directly into the tube, allowing ballistic calculations to be performed by the mortar itself. This architecture minimizes errors resulting from chassis flex, suspension movements, terrain irregularities, or small vehicle displacements during firing, significantly improving alignment accuracy during rapid-fire sequences. It also maintains targeting capability even when the GPS signal is weak, degraded, or unavailable, reflecting the electronic warfare conditions observed intensively in Ukraine since 2022 and already factored into NATO’s operational planning. 

The INS also allows the system to retain its characteristic turretless configuration, where recoil energy is transmitted directly to the ground. This solution facilitates the integration of the mortar into lighter 4x4 tactical vehicles, maintaining payload margins exceeding one ton. From an operational standpoint, the EMOC reflects the trend among modern armies to compress the cycle between stopping, aiming, firing, and moving, thereby reducing vulnerability to counter-battery fire. 

The EMOC’s fire control architecture integrates electronic target selection, ballistic calculation, automatic tube positioning, inertial navigation, and MRSI (Multiple Rounds Simultaneous Impact) capability. Weapon alignment can be completed in less than five seconds, while aiming correction takes less than two seconds. Additionally, the system supports azimuth sectors of ±1067 mils and elevation angles ranging from 800 to 1511 mils. 

Unlike more conventional mortar systems, which rely on manual calculations and voice coordination, the EMOC is designed to be fully integrated into digital target acquisition workflows, incorporating information from drones, forward observers, combat management systems, and digitized artillery networks. The integration of the INS into the gun assembly further reduces positional deviations caused by vibrations, terrain irregularities, or partial vehicle movements during rapid-fire sequences, while decreasing reliance on satellite navigation in contested electromagnetic environments. 

The EMOC also stands out for its compatibility with EM&E Group’s guided mortar ammunition, which is capable of maintaining a CEP of less than 10 meters without requiring any modifications to the system. At the same time, the fire control architecture maintains open integration with external combat management systems, target acquisition sources, and domestic artillery software. The system also maintains manual aiming and emergency storage functions, provided by the manufacturer to ensure operability in the event of actuator failure, power outage, or degradation of digital capabilities. 

Overall, the Spanish system reflects the evolution toward highly mobile and dispersed indirect-fire platforms, optimized for rapid maneuver operations and contested electronic warfare environments. 

From a structural standpoint, the EMOC differs from most Western 120-mm turreted mortar carriers in that it transfers recoil energy directly to the ground via a deployable baseplate, rather than absorbing it through the carrier vehicle. Before firing, the mortar tube lowers toward the rear of the vehicle until the baseplate contacts the ground, thereby eliminating the need for reinforced hulls, turret rings, hydropneumatic recoil dampers, or extensive suspension reinforcements. This solution allows the system to be integrated into a much wider range of light tactical vehicles without significant structural modifications, including models with payload capacities close to one ton. Operationally, the EMOC departs from the traditional concept of a heavily armored turret mortar to offer a lighter fire support platform with lower logistical and maintenance requirements, while also potentially reducing long-term structural fatigue on the chassis. 

Most Western 120-mm turreted mortar systems are mounted on 6x6 or 8x8 armored vehicles weighing between 20 and 40 tons, whereas the EMOC has been designed for significantly lighter tactical platforms, such as 4x4 vehicles, as demonstrated by the Toyota Land Cruiser unveiled in 2025. This reduction in weight improves strategic transport conditions by lowering fuel consumption, easing bridge-crossing restrictions, reducing maintenance requirements, and increasing compatibility with lighter transport aircraft. Similarly, this configuration facilitates a broader distribution of indirect fire capability at the battalion level without relying exclusively on specific armored brigades. 

Another advantage of the system is its compatibility with 81-mm and 120-mm mortar tubes, both smoothbore and rifled. The 120-mm variant can achieve a maximum rate of fire of ten rounds per minute and a sustained rate of four rounds per minute, while the certified range with EM-120 ammunition reaches 8.45 km. These performance characteristics place the system within the standard parameters of contemporary 120 mm mortars, whose primary strength remains the projectile’s high destructive power rather than extreme range. Projectiles of this caliber, weighing between 14 and 16 kg, generate significantly greater blast and fragmentation effects than those of 60 mm and 81 mm mortars. Furthermore, mortars retain high tactical relevance in scenarios such as trench warfare, urban combat, engagements on reverse slopes, and forested environments, where their high-angle trajectories allow them to strike targets inaccessible to direct-fire weapons, including entrenched infantry positions.

A capability based on technological sovereignty

EM&E Group developed the EMOC using in-house designed mechanical, electronic, and software components, with the aim of reducing reliance on external suppliers of subsystems. This approach could strengthen its export prospects, particularly in a context where many countries are seeking greater technological sovereignty, domestic software integration, and reduced dependence on foreign suppliers. The system’s open architecture also reduces reliance on a single supplier and potentially facilitates its integration into both NATO command networks and non-Alliance structures. Its relatively limited infrastructure requirements may also prove particularly attractive to operators interested in diversifying their armored mortar fleets.

In March 2025, the EMOC was presented in the United Kingdom as part of the British Army’s requirements for a 120mm articulated mortar. In that context, the system positioned itself as the lightest and least complex alternative within an increasingly competitive European market shaped by post-2022 procurement reassessments.

Overall, EM&E Group’s 120 mm EMOC combines precision, tactical mobility, and reduced exposure time to meet the demands of modern combat. Its digital integration, the incorporation of an INS in the tube, and its ability to operate on lightweight platforms directly address the need to increase survivability and reaction speed against ISR threats, drones, and counter-battery fire in contested electronic warfare environments.

Written by Jérôme Brahy

Jérôme Brahy is a defense analyst and documentalist at Army Recognition. He specializes in naval modernization, aviation, drones, armored vehicles, and artillery, with a focus on strategic developments in the United States, China, Ukraine, Russia, Türkiye, and Belgium. His analyses go beyond the facts, providing context, identifying key actors, and explaining why defense news matters on a global scale.

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