Of course the tank's bleedin' invisible. that's why they paint them funky green or of late sandy colours...

Camera's take a photo of the terrain people are planning to invade (multimap has been making this simple for years).

People project the image onto a screen and some pen pushers who wouldn't know what a field would look like otherwise decide what pattern to use.

People paint the tank with that pattern.

Fits the Sun story perfectly.

Should I don my coat?