"Esprit de Corps" is the twenty-fifth episode of the third series of the 1960s cult British spy-fi television series The Avengers, starring Patrick Macnee and Honor Blackman. It was first broadcast by ABC on 14 March 1964. The episode was directed by Don Leaver and written by Eric Paice.
Steed and Cathy investigate the murder of a soldier, uncovering a plot to stage a coup d'état against the British government. The regal Mrs. Gale encounters a strangler who is not a true gentleman.