Tim,
An airbrush is really essential in laying down your base pattern & weathering, but then again I doubt many German units in the field had access to spray equipment - most tanks were "custom painted" by their crews with whatever they had at their disposal which included mops, brooms & rags. IMHO I think many of these beautiful camo jobs you see are too good to be true.
I've done it both ways but prefer the airbrush. You can get a decent double action setup for less than what that Tiger set Santa back.
Here's another link for your reference:
http://www.clubhyper.com/reference/p...anzersjb_1.htm
Chuck