Third Reich

The Third Reich was the period in 20th century Earth history where the Nazis controlled Germany. The Nazis ruled from at least 1938. (TV: Let's Kill Hitler)

Winston Churchill originally saw the Ironsides as "our salvation" and as a weapon to use to kill the Third Reich with and for the Allies to win World War II due to their hostility. (TV: Victory of the Daleks)

Jack Harkness and Angelo Colasanto thwarted a plot by the Trickster's Brigade in 1927 to use an alien parasite to harm future US President Franklin Delano Roosevelt's mind and allow the Nazis to win World War II and extend the duration of the Third Reich. (TV: Immortal Sins)

Alternate timelines
Johann Schmidt was the eighth incarnation of the Doctor from an alternative timeline in which the Nazis won World War II. He spent ten years helping political prisoners escape the clutches of the Nazis and disrupted the Third Reich's "ethnic cleansing programmes". (AUDIO: Klein's Story)