Because the story's structure is out of chronological order, you wonder until the end

Question

O a whether the bridge burned

О b
how long Farquhar was prisoner
Oc whether Farquhar is really dead

Od which shot killed Farquhar

Answer 1

Of whether the soldiers knew about Farquhar's plan

It's likely that all of these questions contribute to the suspense and tension in the story as the reader tries to piece together the events and outcome.