Yes, it has a basic rigging; i mean that the tank could be moved on the "Y" axis, and the tracks will move, along with the wheels; it could be turned on "Z" axis, and the tracks will move on the opposite direction; plus, the gun could be elevated, and the turret's and hull's doors could be opened.

No, the model has a procedural material created via nodes, that simulates rust, dirt and so on; the base is the yellow used by Italians in Africa (but it could be changed), plus the procedural nodes.

Yes, but not very good; the UV mapping i used was necessary to bake the edges of the procedural's nodes, so it is a basic UV map.

No, i used only the basic add-ons offered with Blender.

No problem, you could easily scrap it, leaving only the principled material, and make textures that you likes.