I don't feel that this episode deserves quite the amount of praise that so many people give it. It delivers a message about the effects of war, but because this is '90s Star Trek it's so watered down. None of the guest characters feel like real people and indeed they exist only to be cheesy caricatures. Raymond Cruz (I'd totally forgotten he was in this) comes off the worst as the near psychotic soldier on the edge of a nervous breakdown with a really OTT performance. I don't believe in a single one of these characters (I had similar issues with season 5's 'Nor the Battle to the Strong', although on a smaller scale).
The ketracel white necklace also looks extremely silly.
The themes of the episode are important ones, but they've been delivered so much better in other places, be it war films or even other episodes of DS9. Quark (whose reasons for being there are kind of iffy) actually manages to be the best part of the whole thing and manages to bring a bit of weight to proceedings. Ezri and the engineer also have some nice moments. We see Nog lose his leg here but the full impact of it won't be felt until later, at this point I think we're all assuming that future prosthetic technology will be able to fix him up good as new.
The "houdini" mines are a scary invention, but once we see just how many are floating around in the Starfleet camp they suddenly become a bit dumb. If there were that many in there, the Jem'Hadar could have wiped out everyone in the camp at any time they wanted.
This is the type of episode you won´t forget. Doesn´t matter how long ago I watched it, this stayed in my mind.