The artist has a good bit of knowledge about tanks. It has sloped armor, and proper size and proportion. My only gripe is that they developed a tank but not the machine guns that it comes with historically. And there are metal grills up front which is supposed to be vents so enemies could just shoot a fireball inside of it and the tank would burn inside out. I assume the turret is unmanned considering that the cannon looks to be disconnected from the turret and is using a box of magic that it is attached to, to fire.
I suppose removing machine guns is reasonable because humans might get too powerful. and I think they could only do one shots with their magic since automatic guns require a physical mechanism engineered for it to become one while magic has different fundamentals that it can't replicate it.
I only did this analysis because I'm bored at waiting for my food.