"War Doctor" is a special character from the British science fiction television series Doctor Who. This incarnation of the Doctor appears during the Time War, a significant conflict between the Time Lords and the Daleks. The War Doctor is portrayed as a more battle-hardened and morally complex version of the Doctor, who struggles with the consequences of war. The character was introduced in the 50th-anniversary special titled "The Day of the Doctor," played by actor John Hurt. The War Doctor's story explores themes of sacrifice and the heavy burden of making difficult choices in times of conflict, adding depth to the Doctor's long history.