He can GUARD all 19 castles on the Wall
if he so wishes.
Game of Thrones Season 5, Episode 9
So, when the security GUARD shot,
I had to change my job.
Money Heist Season 1, Episode 1
I'll also give you
20 of my household GUARD
Game of Thrones Season 1, Episode 4
Ser Meryn will GUARD
Lady Margaery and Tommen.
Game of Thrones Season 4, Episode 1
only ghosts would GUARD the Wall.
Game of Thrones Season 1, Episode 10