Saying military vehicle should not be camouflage just makes very little sense to me. Seriously, that's just laughable.
On the subject of "universal" patterns, they simply do not work. ACU is prime example of a pattern that was supposed to be usable in multiple environments and it has the problem with most "do-all" things and that is it works ok a lot of the time but not quite good enough any of the time. Multicam is a great pattern and while it works well in many places it fails in a lot of others. Here in the mountains of Virginia it is pretty useless in the Spring and Summer but it does well in the fall and winter. It seems to work well out in the desert states year round. When you play Airsoft, you get to see a lot of military patterns in action and see what works when and where and what doesn't. ACU is an attention magnet just about year round and Multicam will stick out like a sore thumb in a lot of places. Similarly, the old woodland pattern that I prefer is really bad to use in the winter months.
Basically all patterns have their uses in a particular time and place but none so far have proven to be universal and such attempts at making a universal pattern have failed miserably. Camouflage is a specialized thing and it needs to conform to it's specific surroundings. The Germans knew this in WWII, which is why they had so many patterns in various theaters. Just my .02
