KISS, starship troopers style. As others have said, marines for smaller vessels and navy for multi. Could go even simpler: commanders/captains for multi, "support" for the rest, and possibly an Intel/scout rank (if there's a rank to spare).

Alternative: role preference-based ranks. Combat, combat support, logistics, (intel, or cram into support or logistics). You lose rank structure thus way, but you know what you have available for mission types


The more I think of it, the more I prefer the latter. I'll be operating large ships (endeavor-hope) and ground pounding (medic, if available) and hopefully some clandestine work

They/Them

Star Citizen:
MISC Endeavor -- Anvil Carrack -- Anvil Terrapin -- Drake Dragonfly