Except American tank destroyers did have rotating turrets and would be called tank by any reasonable person. Also, the S-tank is a dead ringer for German WW2 ta

Except American tank destroyers did have rotating turrets and would be called tank by any reasonable person. Also, the S-tank is a dead ringer for German WW2 tank destroyers, and even fights in a very similar way (defensive/ambush) but is considered a tank. And then there's the Russian IS-152, ISU-152, ISU-122 which can be heavily armoured direct fire front-line fighters, but can also raise their guns for indirect artillery support.