Back2Fronts is an extensive mod that will overhaul your Call of Duty 2 game to a next level. This mod brings more variety, intensity, realism and battle-like experience. Try new weapons, fight new enemies, fulfil new missions and explore new options. Mod is SP and MP friendly (although primary part is SP).
Here is a gameplay video capturing the Prisonbreak mission (Leon SP map). Map is heavily moddified. Player plays for a Russian soldier imprisoned behind German lines in winter 1941/42 (note the bare prison hands). He must escape the prison complex to find way to his comrades. The facility is guarded by German SS - Allgemeine elites and Waffen troopers. It has automatic saving system, added ambient sounds and music.