Reportedly, the Russians have similar bunkers located along the border with China, using old T-34 turrets and other obsolete models. It is not a bad concept for fixed emplacements. Properly placed, they can control key passages and slow any attacks. Plus, a good tactic is to site a bunker to be difficult to destroy, and when it gets attacked by ground troops, as is normal, other bunkers will be sited to cover the original bunker until it can be evacuated.

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