Fellblade (super-heavy tank from Warhammer 40k) 3ds max July 2009
An old training model for practicing some modeling tricks.
The polycount is ~261k triangles.
For reference I used these pictures of custom-built tabletop model, although I made minor changes where I felt it necessary, and removed some of the detail.
http://www.belloflostsouls.net/2007/10/blog-post.html
I also did general research on the subject and similar tanks.