Was that our first exposure to a non-soldier Cardassian? I know he was military, but like a clerk or something. I think he really added some color to Cardassians, who up until that point were nothing but a one-dimensional fascist military race.
I'd classify Garak as Military. While he isn't a soldier per se him being a Spook (Especially a Cardie Spook) means he was directly involved in tactical ops.
Marritza by contrast was doing a decidedly civilian job (file clerk) and most likely only ever participated in combat during training.
I love the idea of Garak reading that and being disgusted at being called part of the military. The obsidian order looks down on the military as Guileless Brutes.