When we lost our cat, we 'posted' (up) signs all over the neighborhood asking if people had seen him.
a horse's 'post position' [=the position of a horse in the line of horses at the start of a race]
No matter what happens, do not abandon your 'post'. [=do not leave your assigned area]
(..) We can defeat anyone at sea, but we'll never hold lands and castles against mainland armies. Not if our captains defy my orders, abandon their posts, and sacrifice our men on foolish missions. I won't apologize for trying to rescue Theon. Then where is he? Where is your kingdom? (..)2016 TvShow: Game of Thrones Title: Home Season: 6 Episode 2