When I joined Rebellion (my first industry position), I was lucky enough to work on the PS2 title, 'Call of Duty: World at War: Final Fronts' for roughly the last 10 months of development.
Initially I was processing assets from Activision (down rezzing models, assigning textures, generally learning the in-house engine, etc), but soon took over the level 'The Relief of Bastogne' from another artist. This involved modelling, texturing, lighting and effects work, collision meshing, and working alongside a designer to make any changes required, implement set pieces, etc. I also made various props used in some other levels.
[Note] Ghosting in images is due to problems with emulation. I no longer have a PS2 setup or the means to capture from it.