One part of the story about this character describes his shocking testimony in a trial where his beautiful girlfriend is struck by the prosecutor, prompting him to deck the prosecutor and call him a miserable cur, which reminds him to buy dog biscuits. It ends by describing him standing before a firing squad, while earlier, his adventures as a famed surgeon and flying ace 
One part of the story about this character describes his shocking testimony in a trial where his beautiful girlfriend is struck by the prosecutor, prompting him to deck the prosecutor and call him a miserable cur, which reminds him to buy dog biscuits. It ends by describing him standing before a firing squad, while earlier, his adventures as a famed surgeon and flying ace were interrupted by the petty errands he must run while in town with his nagging wife. FTP, name this daydreamer whose "Secret Life" was described by James Thurber.
One part of the story about this character describes his shocking testimony in a trial where his beautiful girlfriend is struck by the prosecutor, prompting him to deck the prosecutor and call him a miserable cur, which reminds him to buy dog biscuits.
Walter Mitty