In the second mission, you meet a friend of Manon's who knew her brother before he died in the explosion. The explosion of which he speaks is the same on in the beginning of Medal of Honor: Underground.
During the cook introduction scene, a short musical theme from Medal of Honor: Underground (2000) (VG) accomanies the introduction of the former WWII French resistance fighter. The action of Medal of Honor: Underground centers on the French resistance, and Michael Giacchino scored both the game and the film.