Military vehicle photos
 

Found these sites and although set up with modellers in mind (i.e. there's lots of close in shots highlighting various features), I thought people here would be interested because in many cases the photographers have been able to get internal shots of the vehicles.
Be warned though, I spent several hours viewing both sites when I should have been working!

http://www.toadmanstankpictures.com/index.htm
Have to scroll down a little way to find the galleries. The home page isn't very inviting but some of the vehicle pages have dozens of images.

http://svsm.org/gallery/walkarounds
This site has more than just vehicles, including ships, artillery and aircraft amongst others.