Ship shield strength is carried over from the last battle during the same turn.
Beam Beam weapon banks with more than 60% energy will fire at enemy fighters.
When a ship's crew is dead the ship is captured if it is fighting an enemy ship. Planets can not capture ships. The ship will continue to fight the planet until it explodes.
Fighters tend to do more damage to larger ships than torpedoes.
Torpedoes and beam weapons tend to do more damage to smaller ships than fighters.
Matching friendly codes overrides the kill mission and primary enemy settings. Ships with the same friendly code WILL NOT FIGHT. (With the exception of NTP and lfm) A ship may disable its torpedo systems by using the friendly code "NTP". (No TorPedoes) If two ships that are enemies use the "NTP" friendly code they will still fight.