In WWll, Russia made inferior tanks but they made many, many thousands of them.
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Russian T72 tanks
Many articles
One video says the Russian tanks use an auto-loader while the American tanks use a 19 y/o soldier.
https://www.youtube.com/results?search_query=t72+tank+turrets
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Russia's largest tank manufacturer may have run out of parts
Sanctions imposed on Russia to cripple its economy may be starting to hurt its military capabilities.
The countrys primary armored vehicle manufacturer appears to have run out of parts to make and repair tanks, according to a Facebook post by the General Staff of the Armed Forces of Ukraine.
Citing available information, it reported state-owned company Uralvagonzavod, which builds tanks such as the T-72B3, has had to temporarily cease production in Nizhny Tagil.
In addition to Uralvagonzavod, one of the largest tank manufacturers in the world with reportedly 30,000 employees last year, the Chelyabinsk Tractor Plant has also run out of foreign-made parts.
https://finance.yahoo.com/news/russia-largest-tank-manufacturer-may-132623968.html
https://democraticunderground.com/100216511442