Fictional Spies In Eight Eras

As usual, what begins as a short list grows and gets out of control:

Caleb in the Bible and Odysseus in the Iliad;

Maugham's Ashenden and Buchan's Hannay in WWI;

SM Stirling's Luz O'Malley in an alternative Great War;

Dennis Wheatley's Gregory Sallust written, and also set, during WWII;

Fleming's Bond and le Carre's Smiley in the Cold War - the latter also later;

Frederick Forsyth's The Fox, published in 2018, set in 2019, politically and technologically up-to-date, including the author's pungent comments on US and UK responses to 9/11;

Poul Anderson's Dominic Flandry series, futuristic space opera becoming substantial future history.

(OK. This post has grown by one era since being published.)