I think he may be referring to the capture mechanism. Drive to any opposing country's flag. It will attach itself to your vehicle. If you can drive back to your nearest friendly base and successfully end sortie on the concrete in front of the vehicle hangar, it will successfully capture the base that flag was taken from.
If you are killed while carrying the pennant, I believe it will remain at that spot until it is picked up and moved further along to any successful landing or until the vehicle driver drops the pennant. The dot command is .dp Clipboard also has a button to click for this purpose IIRC.
ENJOY, and post any bugs that you discover along the way.
