This is my own personal opinion, but I don't think the Knights always help their cause. Recently I'm seeing a fad to try to take an airbase without taking down the fighter hangars. This can work in certain situations, but I'd say shouldn't be the norm. I personally think this is done in an attempt to lead to a vulch and pad scores in the name of having the hangars ready to go once captured. But they don't get captured and the fight lasts for a long time. Blitzkrieg...move in fast, destroy everything, capture and move on. Let the enemy up from a far-off field to get to the defense, by then they'll be outnumbered and the goon can slip in...better than swatting the enemy fighters one-by-one who can just constantly respawn on the field to join the low altitude fight. Anyway, tonight when the Bishops have as many players as the Knights and Rooks combined, it's asking for trouble to let them up a field you are trying to take. We tried to take one base on our home island while the Bish successfully defended it and soon took the other 4 bases on the island. I know it's sort of off-topic, but now that we have less numbers, we do need to be smarter [than we had to be before.]
I'm no general or student of strategy and this is just my $.02.