Assertion: cruiser's gun | /r/CapableOf | prove ineffective
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text: In the battle, elements of motorized SS regiment "Totenkopf" (later to be expanded into SS-Division Totenkopf)—were overrun, their standard 37 mm (1.46 in) PaK 36/37 anti-tank guns proving ineffective against the heavily armoured British Matilda tank.