[@Ophidian] except none of them are designed for reentry. I'm not going to kill you by just landing on a planet over and over, the army is for the ground. I don't think I'll be killing anybody, in fact. not the UU style to kill off other species when they could make them a client state and leech their tech designs.

edit: and to be perfectly clear, 20 ships and 10k troops could hold maybe a single solar system and a portion of a planet. any further, and you're going into overextension.