For Wing IV, use the command line wc4 -chicken. These controls should work: CTRL+W to destroy targeted enemy, CTRL+ALT+W to destroy all enemies on radar, and ALT+O to become invulnerable. Simon Harju sent in these codes for Wing Commander II. None of these code work for Wing Commander I.
CTRL-I = Decreases Dynamic Intelligence
ALT -I = Increases Dynamic Intelligence
CTRL-J = Autofire Off / Calibrate Joystick
CTRL-M = Memory Allocation Check -UNERASEABLE-
CTRL-O = Eject Warning Light and Siren Check
ALT -O = Destroy Cockpit Instruments (forentire mission)
CTRL-V = Version Information
ALT-Z = Self Destruct
ALT-I = NSERTDestroys all enemy ships except capital ships
CTRL-P = Pauses without the Pause Box