Paul, provenance. Is that vehicle yours and are you the first owner since disposal? If yes then you have some reasonable certainty that it was applied in service, right?
If it is an in application then perhaps it was for some safety directive that supersedes the need to be camouflaged and all tactical, perhaps helicopter operations?
The other thought is amphibious landing training and the need to keep track of vehicles in the event they get submerged in an underwater hole etc.
Can I reproduce your picture with credit to you on other platforms to see if anyone knows?