...is that not every crew during WW2 had time to get a spray gun to paint on the winter white wash, meaning a lot of AFVs would have been painted with a brush. A few of my friends have tried to recreate tanks with a dark base coat and a faded, worn whitewash over the top. This is how they did theirs and they did look pretty good.
Alot of people make the art of whitewashing out to be hard, but really it is simply applying a white overcoat. My friends simply painted on their base coats of dark green or camouflage and then, after letting it dry for a few days, simply drybrushed the whole model with white. By using a little more paint then with normal drybrushing, they achieved white streaks over flat areas, while still allowing the basecoat to be seen. Like I said, it looked pretty good, although I would recommend testing it first on an older model, just to get practice and the technique right.
I'll try and get some photos of my friends' models for you, James