I'm sure this has been covered a dozen times in other threads, but I can't seem to get the search to work at the mo. So here goes...
I've noticed that sometimes when I build a military starbase and upgrade it to the nines, my ships occasionally don't pick up all the attack/defence bonuses that they should. At first I thought it was something to do with my ship sizes, as I first noticed it when I had some medium ships in the area of effect that picked up the bonues, but some small ships I had left over from the initial phases of the game didn't pick them up.
However, I'm now playing the campaign (finally) and my medium ships aren't getting any bonuses. Why?