Well, every time I was deployed (in real life) to the middle-east desert, I was issued new desert gear, including desert boots & desert uniforms. So thats possible. As for them being dirty so quickly, if they landed durning a sand storm, I think they would probably be about that dirty. I was blasted a few times in sand storms & I was pretty sandy. I don't think that would prevent them from being "specialists" of a certain terrain though. They did bring back packs that we never saw on Endor or Hoth, and they carried some pretty heavy fire power. Just my thoughts.