[mrtnmcc]

Maybe in a controlled setting they can detect mines, but there are plenty of other reasons for dry soil, i.e. hard to detect consistently without false positives. For tank camouflage that's all you need, something that blends in with false positives.

[XorNot]

No you need enough false positives that your adversary won't find it cost-effective to just commit a missile to all of them.

[snovv_crash]

Wouldn't a 50cal round be more cost effective?