To enable the cheats for Wing Commander 4 start the game with wc4
-chicken.
It should say:
Chicken mode enabled.
Then type (after you target something) Crtl W and this will instantly
obliterate the targeted ship/object. Ctrl Alt W will destroy all enemy
objects on the screen. Alt J just bombs the game. Alt F shows the Frame
rate and alt D shows memory status.
It looks that there are more: -mitchell, -mitchell2, -test