Final answer:
Based on the narrative provided, characters arrived at the property and observed the concluding events of a battle at three o'clock, and the last gun ceased firing shortly after four o'clock. Thus, they came to see the property approximately one hour after the flyover.
Step-by-step explanation:
The question seems to be based on a piece of narrative, perhaps from a novel or a short story, where characters observe a flyover after experiencing a significant sequence of events including travel and a 'dying battle'.
From the provided excerpts, it can be inferred that the characters witnessed the concluding events of the battle after which they expected the planes from the flyover to land.
The passage indicates an arrival at the destination at 'three o'clock' and the last gun going out of action 'shortly after four o'clock', suggesting that the characters came to see the property about an hour after the flyover.