Fuchs Joint Air Ground Missile System...The WW2 German 88mm but with missiles is reborn (capable against air & ground targets)

 

If you don't know about the German 88 then you're missing out. Probably the best cannon in WW2. Best in this case is that I believe it was the most versatile. Below you see it operating in the anti-tank and anti-air role, which is why you got the above title to this post. Oh and it also served as the main gun on a couple of German tanks too....oh and I believe also a few ships.