I agree keith all of the vehicles I have seen ex factory are sprayed as were those ex the large Army overhaul units.
So far as type of paint I am unhappy with two pack because it is difficult to touch up and because it traps moisture in lap joints etc... Never liked it for restoration.
Acrylic ( Nitrocellulose replacement ) is too easily damaged, I like it for aeroplanes ( along with Butyl Nitrate) but not Military vehicles.
I recently used some Coulthard's Aklyd and it was the best enamel I have used. A little hardener I hope will resolve the chalky scraping problem...but I want a bit of that anyway. I want my vehicles to look used.

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If the paint is easy to apply a touch up every ten years or so shouldn't be a problem for me. ( I will be long gone by touch up number two,

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