https://t.co/sIW6G2V6tC proto-tanks and tank concepts that never made it to battle https://t.co/ptQVGNIqwO

https://t.co/sIW6G2V6tC proto-tanks and tank concepts that never made it to battle https://t.co/ptQVGNIqwO

— brunurb (@brunurb) June 1, 2020

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