I came across this statista.com graph about tank production during WWII:
There are many things to find interesting on this graph. My question is about just this upper corner:
This says that the Soviet Union went from worst to first in just one year. That is, they went from
- 0 tanks manufactured in 1940 to about
- 5,000 tanks manufactured in 1941.
Of course, production numbers like these don't come out of nowhere; it can't have been an overnight process to make this many tanks. How did this retooling process take place? I am specifically interested in many aspects of this change in the production of tanks in the Soviet Union.
Big question: How did the Soviet Union plan and manage factory retooling to produce many tanks in 1941?
Detailed sub-questions:
- When did industrial planners begin drawing up plans for retooling for tanks?
- When were these proposals first brought before Soviet leadership for approval? When were they approved?
- Who oversaw this process? Was it centralized or performed by local committees?
- How was retooling impacted by the evacuation of industry to east of the Urals?
- What were lead times for converting to tank production?
If the chart I saw is inaccurate about 1940, I still want to know about the process of tooling for tanks in the Soviet Union in and around 1941.If the chart I saw is inaccurate about 1940, I still want to know about the process of tooling for tanks in the Soviet Union in and around 1941.

