The SU-76I SPG was built using captured German chassis, but by 1943 it was getting difficult to find German tanks in good condition. #OTD in 1943 the 5th Guards Army reported that almost half of their SU-76I were sidelined with mechanical issues. #tanks #history #WW2 #WWII

The Americans built the GMC T48 for the British, but they considered it unsuitable for the European theatre. The halftracks were passed off on to the Red Army where they were used under the name SU-57. The first vehicles arrived in the USSR #OTD in 1943. #history #WW2 #WWII

#OTD in 1940 Krupp was given permission to design a new suspension for the Pz.Kpfw.IV tank with large interleaved road wheels. It was used on several experimental vehicles, but never made it onto the mass produced tank. #tanks #history #WW2 #WWII

The Assault Tank T14 program was cancelled #OTD in 1944. In reality, the tank died more than a year prior, as it was catastrophically unreliable and paled in comparison to other prospective heavy tank projects. #tanks #history #WW2 #WWII

A modernization program was launched to bring the Ram tank up to the level of the Sherman by replacing its 57 mm gun with a 75 mm. This program became pointless as Sherman tanks became available in sufficient numbers and it was cancelled #OTD in 1943. #tanks #history #WW2 #WWII

#OTD in 1939 the Red Army ABTU reported that new model tanks built in 1939 would not be able to undergo battlefield trials in the Winter War. The KV-1, T-100, and SMK-1 were sent to Finland after all, while the A-32 was not. #tanks #history #WW2 #WWII

The Red Army's manpower crisis in 1942 resulted in commanders pulling men from anywhere they could find them to fill gaps, even specialists such as tankers. #OTD in 1942 Stalin signed a decree prohibiting the practice. Tankers could only serve in tanks. #tanks #history #WW2 #WWII

#OTD in 1941 factory #76 moved to the territory of the Ural Turbine Plant and began producing T-34 and KV-1 engines. This went a long way towards making tank manufacturing in Tankograd self-sufficient. #tanks #history #WW2 #WWII

#OTD in 1937 the Italian army ordered a new 13 ton medium tank. While hardly cutting edge, the M 13/40 was similar in fighting ability to its contemporaries, the Soviet T-26 and British Cruiser Tank Mk.I. #tanks #history

In the end of the 1920s, the Red Army's tank branch was stuck in a rut. #OTD in 1929 a commission was sent abroad to purchase samples of foreign tanks and production licenses. Christie and Vickers designs obtained this way inspired a new generation of Soviet tanks.#tanks #history

The Churchill tank was the heaviest foreign tank to see combat with the Red Army. Why were so few ordered and why do we seldom hear about its accomplishments? I dive into this question in my latest video. #tanks #history #WW2 #WWII https://t.co/nVNXMiBmil

The T-29-5 tank entered trials #OTD in 1934. This tank was designed to replace the T-28 as the Red Army's breakthrough tank. As with many other tank projects of the mid-30s, constantly changing requirements ultimately led to its failure. #tanks #history

#OTD in 1942 a mild steel prototype of the 40/43М Zrinyi rohmtrack (later Zrinyi II) was completed. This vehicle was built on the chassis of the Hungarian 40M Turán tank and served as a rough equivalent of the German StuH 42. #tanks #history #WW2 #WWII

Permission to develop a "tracked tractor" was given to Renault #OTD in 1916. After protracted debates about the use of the chassis, the "tractor" turned into a revolutionary tank that defined the classical layout AFVs use to this day. #tanks #History #WW1 #WWI

#OTD in 1918 French Renault FT tanks landed in Odessa as a part of an expeditionary force fighting in the Russian Civil War. Some of these tanks were captured and reverse engineered to start a new Soviet tank program. #tanks #history

The Italian Carro P 40 heavy tank project was upgraded with a 75 mm L/32 gun #OTD in 1942. This weapon was comparable to the American 75 mm M2 or Soviet 76.2 mm L-11, not the most modern gun, but still useful on the battlefield. #tanks #history #WW2 #WWII

The KV-13 had an interesting ability to take either a KV-1S or a T-34 drive sprocket and tracks. #OTD in 1942 the feature was dropped and development of the tank continued with KV running gear only. #tanks #history #WW2 #WWII

This model should not be confused with the IS-3M, a more thorough modernization that was conducted in the late 1950s. The same work turned the IS-2 into the IS-2M. #tanks #history #ColdWar

#OTD in 1950 an order was given to perform a modernization of IS-3 tanks to extend their life in post-war service. This program was codenamed UKN. Since the tank was based on the IS-2, these improvements were also applied to the older tank as well. #tanks #history #ColdWar

#OTD in 1942 the Red Army issued requirements on a man-portable anti-tank rocket launcher. The requirements were so steep that a weapon that met them was only accepted into service in 1948. #history #WW2 #WWII #ColdWar