PAK-40 Anti-
The PaK-40 Anti-Tank gun forms the majority of German towed AT capability in late war FoW. With an AP rating of 12 and RoF 2, it will take care of Shermans and T-34s with ease, and the gun shield makes it a little bit better at surviving.
The PaK-40 in the real world
While it may seem impossible to many neckbeards and wargamers, the real world is in fact a thing. Following fears about the effectiveness of the then-brand new 5cm PaK, German engineers started making a new anti-tank gun, which would be designated as the 7.5cm Panzerabwehrkanone 40 (75mm Anti-Tank cannon to those of us in the anglosphere). This new gun offered much greater capabilities against enemy armoured vehicles whilst still being small, light and practical enough to be put into service.