When searching for exfil it became clear to me that most people, outside of the military, have no idea what this term means. Even Wikipedia has it terribly wrong, and this wouldn’t be the first time. They still list a wrong place of birth on my author’s page, among other factual errors.
So what the heck is exfil (exfiltrate or exfiltration)?
There are several parts when you plan a recon (yay another abbreviation!) or military mission to hit a target.
Hold my beer while I explain.