Related Clues:

• Sentinel, watcher
• Lookout person
• Sentry or watch
• Look-out person
• One is on watch
• One keeps watch
• One posted on guard
• The sentinel was 1 across
• It's your own responsibility to do as Wenceslas did
• At last one may attempt to have a watch
• That's the prospect - 1 across
• That's the prospect for a sentry
• That's his if he drops off to sleep
• Watch it - there's nothing all right with that oaf around
• For the sentry, it's his to worry about