C.I. -- No. Just ... no.
Traditionally referring to anything in space that operates in a mobile manner is called a ship, groups of these things are called a fleet and are part of a navy. Presently the only things that go into space are the equivalent of rafts.
regardless the people who have the best grasp of space/vacuum/microgravity warfare are submariners. Division is a groundpounder term which describes a group of soldiers. Were this game to have marines for either boarding actions or invasion, or army units to occupy enemy planets, then the term division would be used, as well we could use, platoon, battallion, squad, or even legion.
the present naveis in the world have aircraft carriers, which carry navy pilots in navy planes. or marines... who are technically a sub group of the office of the navy (in the US), as much as that irritates the jarheads.
using the present definitions as they exist, and as the game, and the military, and leading science fiction writers(even the peaceniks) we avoid a lot of confusion. Even commercial companies refer to their ships as "fleets" or "navies" or "merchant marines"
A network implies (and if it isnt the real definitions, its certainly how it is being used) to define a system that interlocks and operates together. generally this is information, or a defensive netork... but even that suggests a stationary series of defensive emplacements, mines and probably a mobile picket force or squadron.
In my mind, Navy is the only applicable term for a space based group of people and material carrying things. the TD in TDN is something we can assume, but we dont know. if the acronym refers to the fleet, it means navy.
as for vasari being plant related. no, we are not some sissy plants. we could be: knife, sword, hammer, fleet... maybe... maaaaaaaybe.
advent...ifyou relaly want to use the ... arm thing, a fist is smaller than an arm... at least on my body. knuckle, fist, arm, fleet
for TEC be consistent: squadron, task unit, task group, fleet
*grumble, grumble, grumble*
fine we will call it network
On the flipside I like C.I.'s idea of just using terms instead of worrying about wether it belongs in Army, Navy, Air Force, Marine, etc. Especially when you consider that the TEC are having to rebuild a multi-system wide Military Organization from the ground up and because of having a poor memory of such a structure they must make do with what they can remember.
On the other hand, not sure I like the Advent or Vasari terms
ryat, you wuss. dont give in. fight it! and if they are rebuilding it from scratch they wouldnt have terms like "fighters, battleships, fleet, carriers," etc. it would be something stupid like "type A armed sports craft 'the swift'" or whatever the marketing directors came up with.
whew, i feel like i just ran a bunch.