The scene where Quark describes to Nog what happens when Humans' creature comforts are taken away is one of Armin Shimerman's favorite scenes he has ever performed on the show.
The writers chose Nog, Quark, Bashir and Ezri to carry the story because they had next to no fighting experience. Unlike Kira, Worf and O'Brien, who had all been in battle and knew how to handle themselves in a fight. The writers were keen to see the reactions of people who didn't know how to handle themselves in a fight.
This controversial episode was one of the first primetime network series to portray the personal effects of Post Traumatic Stress Disorder (PTSD) in relation to combat involving the main characters of a series.
One of the most controversial episodes ever made, for the way it shows the harsh realities of war in such an unflinching manner. The director, Winrich Kolbe was a Vietnam veteran, and used his experience when directing the episode.
Max Grodénchik can actually sing very well, as opposed to his character Rom who horribly sings "The Lady is a Tramp" in his audition with Vic Fontaine.