Some further examples of irony in Ambrose Bierce's story "An Occurrence at Owl Creek Bridge" are the following:
It is ironic that Peyton Farquhar is being hanged for a crime he did not succeed in committing. He is being hanged from the bridge he intended to burn down.
It is bitterly ironic that he imagines he is escaping and goes through a whole series of hopes and fears but ends up having his neck broken by the hanging rope just when he thinks he has reached the safety of his home.
It is ironic the way Ambrose Bierce leads the reader to believe that the "gray-clad soldier" who stops at Farquhar's plantation and tells him how easy it would be to burn down the bridge turns out to be an enemy soldier. The very last words of the second section are: "He was a Federal scout."
It is ironic that Farquhar should imagine that he is living for a long period of time while falling with the noose around his neck, when he only has a matter of seconds to live. The length of his life was measured by the amount of slack in the rope.
A rope closely encircled his neck. It was attached to a stout cross-timber above his head and the slack fell to the level of his knees.
There are many different views of what constitutes irony. Typically irony seems like something that would be a joke if it were not so painful or tragic. Ambrose Bierce had a sour, sardonic, pessimistic, cynical nature, as is shown in the grim humor of the definitions in his book The Devil's Dictionary. He savored irony.