Related Clues:

• One on guard
• ''Who goes there?'' asker
• Soldier on guard
• Military lookout
• Ever-vigilant sort
• Door tender
• Checkpoint figure
• Sentinel
• One whose speech is halting?
• One who stands guard
• Soldier posted to keep watch
• Sentinel, watch
• Sentinel, look-out
• Person on watch
• Lookout person