IIRC the assault gun in the Low Countries is a StuG IIIA with a short 75mm L/24 gun. This type was in reality used as an infantry support weapon and not a tank hunter. So it´s ok to be in the artillery class.

<t> Well, that´s interesting. The only unit I knew of, that could switch was the 88mm Flak. Could you give a list, which units are "switchable"?<br/>
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Also, it´s not quite clear why the StuG IV is singled out as a switchable unit. Because, as the OP said, it´s not much different of a StuG ...

<t> AA units can fire defensively multiple times, until they run out of ammo, fighters only fire defensively once. I use AA units to cover my artillery and fighters to cover my tactical bombers.<br/>
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The late-war german self-propelled AT units are VERY powerful. If I remember correctly, they ...

<t> First, congratulations to the developers for an excellent game. You can pat yourselves on the back for a job well done. This game really captures the feeling I had when playing PG years ago.<br/>
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I have a question about the unit statistics, not sure if it is a mistake or intentional. The ...