Commandant (The Impossible Astronaut)

A Commandant was a German officer in charge of Stalag Luft 14 in World War II. The Eleventh Doctor attempted to lead the prisoners in an escape attempt, but their escape tunnel ended up in the Commandant's office.

In 2011, Amy Pond and Rory Williams read about this incident in the book Myths and Historical Impossibilities. (TV: The Impossible Astronaut)