A report on trials of IS-7 pilot tanks was composed #OTD in 1948. The tank was not yet sufficiently reliable to enter mass production. Design changes were recommended but never put into effect as all work on tanks weighing over 50 tons was cancelled. #tanks #history #ColdWar

Work on a servo mechanism to make driving tanks easier was ordered #OTD in 1938. These servos were later implemented on the T-34 tank. #tanks #History #WW2 #WWII

The USSR disassembled and studied a Pz.Kpfw.III Ausf.G tank. A detailed report was composed #OTD in 1940. This design heavily influenced the T-50, particularly the commander's cupola, dual machine guns, and the driver's dashboard. #tanks #history #WW2 #WWII

You often hear that the T-34 was a disposable tank that was never intended to survive for long on the battlefield, so there was no reason to make it reliable. But how true is that really? Let's look at some concrete numbers. #tanks #history #WWII #WW2 youtu.be/ouCCJqv73Ng

As the T-60 was put into production at various factories, changes were introduced into the design which impeded compatibility of their parts. #OTD in 1941 any deviations from the design without approval from the lead designer were forbidden. #tanks #history #WW2 #WWII

Trials of the Churchill tank in the USSR ended #OTD in 1942. Despite mechanical issues, the tank was found to be well armed and armoured for its class. The Churchill served in Guards Heavy Tank Regiments just like the Soviet KV-1. #tanks #history #WW2 #WWII

The Medium Tank T6 was standardized as the Medium Tank M4 #OTD in 1941. The final product would end up looking very different, but this was the start of the story of America's most iconic tank of the Second World War. #tanks #history #WW2 #WWII

#OTD in 1939 the KV-1 was shown to the Soviet government. Even though the government asked for a multi-turreted tank, it was still permitted to participate in battlefield trials where the KV proved its supremacy over the T-100 and SMK heavy tanks. #tanks #history

#OTD in 1939 the Director of Mechanization Major General Davidson invited WWI tank builder Sir Albert Stern to come out of retirement and develop a new tank. This was the first step towards the formation of the SVDC and their controversial TOG tanks. #tanks #history #WW2 #WWII

Trials of the SU-85B concluded #OTD in 1945. The project proved that it was possible to mount a much more powerful gun on the SU-76M, but since the war was already over there was no point in continuing with the project. #tanks #history #WW2 #WWII

The SU-76I Soviet SPG built on captured German Pz.Kpfw.III and StuG III chassis. #OTD in 1943 a modernized variant with a Pz.Kpfw.III cupola was accepted into production. Due to a shortage of chassis captured in good condition, these vehicles were rare. #tanks #history #WW2 #WWII

A battalion commander gives orders to company commanders in front of a camouflaged T-34-85 tank. Interestingly, two of the officers have sewn shoulder boards to their overalls, which was not normally done. #tanks #history #WW2 #WWII

KV-1 commander standing next to a destroyed Pz.Kpfw.III tank. #tanks #history #WW2 #WWII

Sexton self propelled guns at the Victory Parade in Berlin #OTD in 1945. These Canadian-built SPGs were rated by the British to be superior not only to their own Bishop, but also the American Priest. #tanks #history #WW2 #WWII

Comet tanks in Berlin on parade #OTD in 1945. Some of these Comets were the new Comet I B type with new exhaust pipes that arrived after VE Day. Most tanks you see in museums today were built this way or modernized to that standard. #tanks #history #WW2 #WWII

The IS-3 tank was revealed to the world #OTD in 1945 at the Victory Parade in Berlin. Even though the USSR was dissatisfied with the tank and replaced it in production the following year, many nations developed specialized "IS-3 killers" to fight it. #tanks #history #WW2 #WWII

Light Tanks M24 or Chaffee at the victory parade in Berlin, #OTD in 1945. Even though WW2 saw a decline of the light tank, the combination of good armour and armament for its role and reliable components kept the Chaffee in service for decades. #tanks #history #WW2 #WWII

#OTD in 1942 a Soviet engineer sent to the US to tour American tank plants wrote a scathing review of the M4A4. Trials in the USSR came to the same conclusion: the M4A2 was considerably better and the Red Army could not settle for a substitute. #tanks #history #WW2 #WWII