Hmm so I wonder if those guys in blue-ish outfits on DS2 are also just cargo shuttle pilots?
I can buy the Shories being nothing more than just Stormies in specialized duds too.
On the real world vs SW world terminology, I don't think things jive all that badly really... Stormtroopers are, to me, the wild card... They're a branch of military that seems to transcend army/navy. I view the Star Wars world as fairly clear on those two... Or at least with the EU mixed in they seemed to be. Thus the Navy has their Naval Troopers for defense/work, the army has their "Imperial Army Regulars" (essentially AT-ST Drivers make up that uniform... infantry just wear body armor ala Veers). The Stormtroopers are somewhere in between, and are the main fighting body of the Empire it appears, but I can see the army backing them up...
I'm just seeing how these "Shoretroopers" fit into it all... Like Jeff says, just stormtroopers in "Marine Warfare" gear perhaps... Or who knows.
I feel like the terminology works though (Army, Navy, etc) ... Even within the Alliance there's the "fleet" guys and then the commandos who may or may not make up the army end of the Alliance's military units. I feel like it's possible it's that simple with them as well. I think we just don't see much of the "army" save for perhaps units on Endor, which could have a heavy mix (like any large military base/installation on a planet may have)?
That is not to say there aren't scads of uniform variations too, I mean this is only going to get more complex as things roll along I believe.

Hmm does this make Bodie an army builder?