I came across a website with some really good 2D WW2 vehicle and aircraft art.
It has most of the major powers vehicles and aircraft in top, side and front/back views.
Thought it was worth passing on for those who appreciate this sort of thing. And it may be useful for those who make icons.
Here it is:
http://ww2drawings.jexiste.fr/Files/...s/Vehicles.htm
cheers,
Cross