Russian Officers are mini bosses that appear in Leningrad level. They drop red soul upon their death.
They wear shapka cap and trenchcoat and carry flare gun. They either shoot player with flare gun or shoot into the air, calling airstike and dealing MASSIVE damage in area before him. It's better to freeze them and shoot them with Shotgun, to conserve ammo (and health if you are chasing down Black Tarot card).
Ironically, later in Leningrad level, they appear to guide German Soldiers.