Assertion: tank's gun | /r/CapableOf | prove ineffective
Facets:
Source sentences:
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.
text: Early in its design, the M-4 tank came with a 75mm gun; this gun eventually proved to be ineffective, and as the designed evolved, major changes occurred.