Tuono Main Battle Tank

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CMBT Mark II Tuono
A Tuono of the 5th Amphibious Assault Division as it was painted for the Nalayan Civil War.
Type Main Battle Tank
Place of origin  Cacerta
Service history
In service 1987 - Present
Used by CRAFlag.png Cacertian Royal Army
Wars FedCom Civil War
Nalayan Civil War
Production history
Designer Crocetto Heavy Industries, Acrea Defence Industries
Designed 1985 - 1988
Manufacturer Crocetto Heavy Industries
Produced 1988 - Present
Number built 800
Variants See Variants
Weight 30.5 Tonnes (33.6 Short Tons; 30.0 Long Tons)
Length 6.75 m (22 ft 2 in)
Width 3.25 m (10 ft 8 in)
Height 2.50 m (8 ft 2 in)
Crew 4 (Commander/Radio Operator, Gunner, Loader, Driver)

Armor Composite Armor; Classified
120mm RA Mark II Version 2 Smoothbore Gun (52 Rounds)
2 x Vitali MG50 (12.7mm; Coaxial and Commander’s Hatch)
Engine ADI Multi-Fuel Turbine Engine
850 hp
Power/weight 28.0 hp/tonne
Transmission Crocetto TMN Mark VI
Suspension Torsion Bar
Fuel capacity 700 Liters Internal (185 US Gallons)
250 Liters External (66 US Gallons) in Aux Fuel Tanks
590 km (370 mi)
800 km (500 mi) with Aux Fuel Tanks
Speed 70 km/h (43.5 mph)

The CMBT Mark II Tuono (English: Thunder) is a Cacertian main battle tank currently in service with the Cacertian Royal Army. Designed independently of the CMBT Mark I Project, the Tuono was the result of a joint project conducted by Crocetto Heavy Industries and Acrea Defence Industries. The Tuono was developed with the Royal Army’s preference for speed and firepower while eschewing armor in mind. This resulted in a tank possessing above average cross-country and on-road mobility easily recognizable with it's angular profile.


Blueprint of the final production model of the Tuono

Development of the Tuono began not long after the Cacertian Ministry of Defense released requirements for a new generation of tank in 1965. Crocetto Heavy Industries initially planned to submit its own prototype as part of the request to compete against designs put forward by both Gabrielli S.p.A. and Alenia Industrial. However, Crocetto was experiencing difficulty with it’s composite armor experiments and thereby decided to pull its proposed prototype from the project deciding, instead, to focus on mastering their composite armor concept which took several years to complete and was finalized in 1969.

The Touno was briefly delayed during the early 1970s when Crocetto, following the successful adoption of Alenia Industrial’s Ariete MBT, began focusing on other armored fighting vehicle projects and working on further applications of composite armor on Cacertian combat vehicles. The tank was privately revisited by designer Aurelia Marik in 1982 upon which she approached several business contacts in Acrea, primarily other designers from Altay Defence and Acrea Defence Industries. Associates in ADI were willing to assist in the design and development of the Tuono resumed in 1985 after nearly a decade of stagnation.

Much of the vehicle’s body and armor was developed by Crocetto while specialized systems, which included the engine and unique 3-axis gyro-stabilizer were designed by ADI. The first prototype was completed in 1986 and was extensively tested in the Sakhalin Mountain Range in Acrea before making it’s debut in Anzio in April 1987. Despite the fact that the Ariete had become well-established as a solid main battle tank for the Royal Army, the Tuono was seen by commanders as a solid flanker and harasser.

The Tuono was adopted as a special application armored vehicle and approved for limited production in June 1987.


Limited production for the CMBT Mark II Tuono began in 1987 at the Crocetto Industries manufacturing plant in the city of Abusina located in central Sarissita. As it was designated to be delivered only to elite and veteran armored units, the Tuono’s production was never expanded to be more than 30 units yearly. The first order of units was delivered to the “Black Falcon” 13th Elite Armored Brigade in December 1987 and were immediately deployed as part of Cacerta’s participating contingent in a join Cacertian-Shalumite winter exercise.


The CMBT Mark II Tuono is a very lightweight main battle tank weighing in at only 30.5 metric tons, 12 metric tons lighter than its better known counterpart in the Ariete. It is equipped with similar composite armor—of which the relevant data is strictly classified—and is unique in that it’s front glacis plate is angled at 75 degrees. Despite its sufficient protections, most crews of the Tuono are trained to rely on their low silhouette and mobility as their primary means of defense.

The vehicle was similarly designed to the Ariete in that it is manned by a crew of four: a commander—who also serves as the vehicle’s radio operator, gunner, loader, and driver. As with other modern vehicles of the Royal Army, the Tuono is equipped for and protected against nuclear, biological, and chemical weapons.

The primary weapon of the Tuono is a different variant of the 120mm RA Mark II with a barrel that is approximately 1.5 meters shorter than the original gun. The breech and loading mechanism also had to be compacted in order for it to be accommodated inside the tank’s turret. The Mark II Type 2 possesses comparable statistics, capable of penetrating 750mm of equivalent rolled homogenous armor at 4,000 meters with a similar 8.35 kg APFSDS round. The slight drop in penetrating potential was considered negligible in exchange for the Tuono’s speed. The tank’s secondary armament consists of a coaxial Vitali MG50 and another mounted to the commander’s hatch. Since the Tuono was designed to be a mobile engager, the turret was equipped with a 3-axis gyro stabilizer to allow the vehicle to fire accurately on the move.

As of 2014, several units have been sent to Acrea Defence Industries to be outfitted with autoloaders and tested. The first of these upgraded units is expected to be delivered in 2017.

Operational History

A squadron of Tuonos during maneuvers in Acrea, 17 July 1990.

The Tuono first saw combat with elite and veteran armored units during the Cacertian intervention in the FedCom Civil War. Their faster speeds and lighter weight made them far more capable in Knichan terrain over their Ariete cousins They would later be deployed in the same fashion to Nalaya during the Nalayan Civil War.


CMBT Mark II Tuono

The primary variant of the Tuono and the only one currently in service.

CMBT Mark II Tuono Type 2

The Type 2 is the proposed design utilizing an autoloader developed by Acrea Defense Industries. The project is currently undergoing testing and the first trial units are expected to be delivered in October 2017.