"Escort missions" refer to a type of game task where players have to accompany and protect another character or object throughout a level or mission. Full definition
Gone are the pesky escort missions where you needed to drag helpless survivors to a safe room and hoped they were able to hold their own. (wccftech.com)
Far from a game - long escort mission as you might have heard, this is still one of the most original titles out there. (dealspwn.com)
These side missions consist of things like escort missions or detective missions. (mkaugaming.com)