Having a decal doesn`t really matter, those who think its not historic can skip the decal, for those who want to use it can do so. Its not that the decal is wrong, it worse if something would be missing.
I don't agree. In the case of a kit of a historic vehicle, I think the decals supplied should, like the kit, be as accurate as possible. Many people who buy this kit will expect the markings to be accurate, and will be disappointed if they discover that they're not. After all the effort that Rubicon are now making to get their kits as accurate as possible (look at the discussion that's gone into recent projects like the M8, the M10/M36 and the SdKfz 251 variants, for example), it doesn't make sense to skimp on details like decals. In fact, with the amount of reference material now available on WW2 armour, it should be possible to avoid most errors (unlike 25 years ago, when model kits contained all kinds of fundamental mistakes, many of which were based on mistakes by military museums). Modellers can, of course, do what they like with their kit - that's where the artistic license comes in.
Of course, we're now debating the inclusion of a single decal, and it's highly unlikely that anyone would criticise Rubicon for including it even if it never actually appeared on an M5A1 or an M8.
