Well, there was some tactics, but it's a bit hazy after not playing the game for so long (firing arcs, point-defense, planetary bombardment ships, etc.). Of course, don't remember carriers being that dominate, and can remember being forced to bring other ships to prevent them being overrun. I do sort of remember the fighter and bomber swarms where usually good against softening or destroying lesser orbiting planetary defenses and minor defense fleets.
Of course, that might be entirely due to the fact I used to play it multi-player, and had more intelligent real opponents that way.