Whenever my chesspiece is being tagteamed by the other 2, I switch sides & fight the abandoned front. I usually start with a buff form because theres no one up to kill me, then I switch to fighters as opposition arrives.
Many times a country will be fighting 2 fronts while the other 2 coutries are only fighting 1 front, It would be nice if the ENY could some how figure out where the fights are, and take that into consideration before engaging the plane limitation. 20Bish+20Rooks Vs 30Bish, means Bish heavily outnumbered & have a limited planeset- Less than ideal.