Yo, OSS !

[G-Man]

[Oss]

where is that 1st one from G-man?

I know the OSS was the name of our intelligence service before and during WWII and predated the CIA

My handle is big O small ss

WEB GRIFFIN writes a few fiction series about the war that are decent, but slow moving reads.

Those folks (men and women) had incredible fortitude to do the stuff they did, parachuting into occupied France etc and helping where no sane folks would dare to tread.  All heroes