FMB 46M Tjván

Fabrjkă de Mașjni Břetjslavi, 46M Tjván (Inventory designation: Medju Tank, 46M Tjván ).

Great Kesh War
The Medju Tank 46M, Medju Tank 46/48M and Medju Tank 46/52M all saw service in the Great Kesh War with Kodeshia and SiWallqanqa. At the time of its service the vehicle was deemed an extremely competent vehicle and popularising it for decades after. Combat reports from the Great Kesh War showed that the primary armament of the 46/48M (Gustav Oțelărje s.a, 90mm 48M Tank Kanón L/55) had significant range and penetration advantages over the 76mm guns which were common amongst the nations of Kesh, and its armour had made the vehicle practically impenetrable to Tiperyn's 3-inch (76mm) rifled cannons from the frontal arc. The stop gap Medju Tank 46M with the 75mm main gun proved to be competent however was slower and some 76mm guns of the time were capable of penetrating the vehicle at average combat ranges, these models were quickly upgraded to model A standard.

The Kesh War also revealed that the early Medju Tank 46M engines were prone to catching fire due to the hotter climate, the Medju Tank 46/48M's engine was less likely to do so however there were a few cases of overheating which resulted in a new coolant and engine ventilation. Similarly, after two tanks were destroyed in the Great Kesh War the early hydraulic fluid in the Medju Tank 46M and Medju Tank 46/48M was found to be flammable, igniting the interior of the tank upon shell impact due to the hydraulic lines which ran along the sides of the chassis, this flaw was fixed extremely quickly in the field by Kodeshian engineers however an official fix would later arrive from Modrovia.

The Great Kesh War made the Modrovian tank and tank gun designers and manufacturers become globally respected and recognised for their products. The Medju Tank 46M would be adopted by many nations post war, some still in operation today, and the overall effectiveness of the design would result in Tiperyn and other nations rapidly accelerating their tank research in order to match the new Modrovian design, resulting in the Tiperyn made PsF Mamba.

Veikan Civil War
During the League of Free Nations coalition intervention into the Veikan Civil War, late model Medju Tank 46/64M Tjván's alongside with 68M Tarsa's would see combat with the 9th Modrovi Obrněná Divize. At this point in its existence its armour was no longer effective due to advancements in ammunition and the general Artemian standardisation of guns of 100mm or larger, its biggest advantage was its agility and advanced targetting system which would allow it to achieve a 70% chance to hit a tank sized target at 1,500 metres. This model also featured a two plane stabiliser allowing it to fire on the move, however the first production series of the Model D had an unreliable stabiliser due to a minor technical fault which caused the stabiliser to cut out at speeds over 35km/h, the issue was quickly fixed upon discovery of the problem.

The Medju Tank 46M Tjván's smaller size and lower weight in comparison to the 68M Tarsa's allowed it to be more mobile and was used to reach regions where the larger 68M Tarsa couldn't, with the 68M Tarsa being better suited to direct head on encounters in open spaces due to its armour and 120mm gun. Despite the lack of protection, the Medju Tank 46/64M Tjván's 105mm gun was still capable of knocking out most tanks of the time due to new APFSDS ammunition.

Upgrades
The Medju Tank 46M saw a few upgrades due to its long service life around the world. The Modrovian official upgrades for the vehicle were:
 * Fabrjkă de Mașjni Břetjslavi, Medju Tank 46M(1946) - Stopgap production model, still featuring a hull gun, and an older high power 75mm gun. This version featured an older engine which was prone to fires and had low range, it also featured thinner armour in a bid to lower the weight as a means to achieve minimum mobility requirements. This model was released due to delays to the development of key systems in the original vehicle.
 * Fabrjkă de Mașjni Břetjslavi, Medju Tank 46/48M (1948) - The original planned production model, featured the engine which was intended to be added and 90mm gun originally intended to be mounted on the vehicle, it featured 35mm of additonal armour plating to the frontal arc, and an additional 20mm on the side armour plates.
 * Fabrjkă de Mașjni Břetjslavi, Medju Tank 46/52M (1952) - Featured a new engine upgrade as well as the introduction of infrared lamps for night operations. The cupola also received a machine-gun mount due to requests from Modrovian and foreign tank commanders alike.
 * Fabrjkă de Mașjni Břetjslavi, Medju Tank 46/55M (1955) - Featured a new 105mm gun with centre aligned bore evacuator, as well as the addition of 80mm of armour to the frontal arc of the turret, and 40mm of armour to the upper glacis, as well as an additional 10mm to the weakest portions of the tank. Featured an effective single plane vertical stabiliser, also updated the IR lamp to a more effective model, as well as a new smoke dispensers.
 * Fabrjkă de Mașjni Břetjslavi, Medju Tank 46/64M (1964) - Featured the addition of a new fire control system with automatic lead prediction and passive thermal imaging removing the need for IR lamps. Utilised a domestic Modrovian laser range finder which proved to be more effective than those available on the market at the time. Featured a two plane, vertical and horizontal stabiliser. Mounts for ERA and composite add-ons were available.
 * Fabrjkă de Mașjni Břetjslavi, Medju Tank 46/88M (1988) - A private venture by Vyrdakov s.a to mount a new light weight Modrovian designed 120mm gun and completely digitised the fire control system, and fully encased the turret in composite addon armour. Was tested by the Modrovian army however was not deemed a worthwhile acquisition, the upgrade kit was then sold internationally to other Medju Tank 46M operators.

Variants

 * Fabrjkă de Mașjni Kaljshmai, Medju Tank "Střelek" 65M(1965) - A radar guided Self Propelled Anti-Air Gun variant of the Medju Tank 46M mounting two, 35mm autocannons which fired in an alternating manner. It was used into the 1970s before being replaced by the 68M TLP's "Střelek" variant.
 * Fabrjkă de Mașjni Kaljshmai, Vehjkul Medju de Ingjneri 50M(1950) - An engineering variant of the Medju Tank 46M, the turret was removed and a flat super structure replaced it. It featured a dozer blade to clear obstacles and featured crane arms and equipment for vehicle recovery. Some models kept their turret however mounted a 152mm howitzer for heavy demolitions, and some were mounted with bridge-laying equipment.

Current Users

 * Kodeshia - Medju Tank 46M, 46/48M, 46/52M and 45/55M's saw service Great Kesh War, later bought Medju Tank 46/64M's which remain in service.
 * South Veikaia - Lend-leased to the South Veikaians during the Veikan Civil War.
 * SiWallqanqa - Operates Medju Tank 46/64M's, saw service in SiWallqanqan Civil War and Quechan Wars.
 * Pukara - Operated Medju Tank 46/55M's modified with the Medju Tank 46/64M's stabiliser and fire control system (didn't featured passive IR), has now upgraded all vehicles to Medju Tank 46/64M standard.
 * Republika Akhalia - Operated 46/52M, now operating Medju Tank 46/55M's and Medju Tank 46/64M's acquired from SiWallqanqa.
 * Kartvelian Tributary State - Operated 46/52M, now operating 46/55M's and Medju Tank 46/64M's acquired from SiWallqanqa.
 * Slivensk Republic - Operates Medju Tank 46/64M's and also Medju Tank 46/88M's which were a private venture by Vyrdakov a.s which mounted a light weight Modrovian 120mm gun.

Former Users

 * Modrovia - Operated all upgrades from 1946 - 1987 before the tank was retired. Engineering model was kept in service until 2015.
 * Gardarike - Operated 46/55M's and later upgraded a limited quantity to 46/64M standard.
 * Legantus - Operated Medju Tank 46/48M's and Medju Tank 46/55M's until _____
 * Mero-Curgovina - Operated all variants from 1946 - 1974
 * Guurdalai - Small quantity captured during the Great Kesh War, it remains unknown what was done to the captured vehicles.