Isabelle DuFontaine

Isabelle DuFontaine was a French resistance fighter featured in Call of Duty 3. She appears to be second in command, right after Pierre LaRoche of the Marquis. She helps Ingram, Keith, and Doyle in taking out several Flak guns in the countryside, and taking out a Nazi fuel plant, helping the Polish 1st division to gain an advantage over the Black Baron. She also helps Keith and Doyle free some Marquis being held hostage, including Major Ingram after a heated argument between LaRoche and Keith. As they were about to leave the town, an armored Nazi car comes to the town square with reinforcements and lays suppressing fire on the Marquis. Isabelle volunteered to take out the car while being covered by Doyle. As she finished planting the charge, she was killed by an early detonation. After the battle, Marcel is distraught by Isabelle's death because he probably loved her, and is comforted by Cpl. Keith. She's also the only main female character in the game.

Ghost
In the Call of Duty: World at War map Nightfire, Many players say there are ghost of two men and one woman. Many players have a theory that the female ghost is Isabelle DuFontaine.