Why is there on some tanks cloth at the base of the barrel

Army Training in Alaskan Arctic, Eyeing Russia and China

Why do Russian tanks have barrels on the back? - Quora

What is that 'lump' in the middle of the main gun's barrel on many tanks? - Quora

Why do tanks raise the barrel after firing? - Quora

T-72 - Wikipedia

Drum or IBC: Which is easier for storage? - ITP Packaging

What was the purpose of the cloth wrapped around a tank barrel? - Quora

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