It's an anti-magnetic mine coating Germans applied to armored vehicles in WWII called zimmerit.
Some Americans such as the M4 Sherman tank seen below just applied wood planks to the sides of their tanks to combat magnetically attached mines.
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It's an anti-magnetic mine coating Germans applied to armored vehicles in WWII called zimmerit.
Some Americans such as the M4 Sherman tank seen below just applied wood planks to the sides of their tanks to combat magnetically attached mines.