Keep in mind that to most of the public, any military vehicle is a "tank" if it's green and not a jeep. (I've had people call my truck a tank, and I'm sure most members of the forum will have had the same).
That said, plenty of vehicles were buried. The question is, is it a rare vehicle that would make it worth restoring, and what state is it in after all these years. You won't know until you find it