Heinrich Himmler

Reichsfuehrer Heinrich Himmler was the commander of the Gestapo in Nazi Germany under Adolf Hitler.

At some point during the 1930s, the Doctor met Himmler while pursuing the Master across Berlin. (PDA: The King of Terror)

In 1939, the Doctor met Himmler again at a party rally in Nuremburg. Himmler was initially suspicious of the Doctor until he convinced him that he was a secret occult master. Himmler then told the Doctor about the Black Coven at Drachenberg. (NA: Timewyrm: Exodus)

In 1944, Himmler acquired the Scrying Glass from Colonel Otto Klein and began attempting to learn its secrets. (PDA: The Shadow in the Glass)