In spy fiction, how often does our hero's sexual prowess become one of the skills to be used in Intelligence work? En route to Merseia, Ensign Flandry has initiated an affair with Lord Hauksberg's mistress. On Mersia, Max Abrams acquires sensitive intelligence that must be transmitted to Earth without the knowledge of either Hauksberg or their Merseian hosts. Solution: arrange for Hauksberg to surprise Flandry with the mistress so that the Ensign can be sent home in disgrace... Later in his career, Flandry obtains important intelligence from a Resident's wife.
SMERSH baits a trap for James Bond by persuading Tatiana Romanova to contact British Intelligence with the story that she has fallen for Bond and will defect bringing with her important intelligence provided that it is he who comes to get her. Of course, Tatiana, like several other women on the other side, really does fall for Bond.
I am not sure how long this Flandry-Bond comparison will continue but, while it does, I find it as interesting as anything else.