Invisible

Flag:	Invisible
File(s):	rules(md).ini
Values:	Boolean values: yes or no, true or false, 1 or 0
Default:	no
Applicable to:	All TechnoTypes; InfantryTypes, VehicleTypes, AircraftTypes, and BuildingTypes

Can be set to 'yes' or 'no' and determines whether or not this object is always totally invisible to all players except its owner.
Bugs/Side-Effects/Unexpected Limitations

• Even if your unit is Invisible=yes, the invisible unit can always be seen by the AI.
  

If used in conjunction with the tag Cloakable=yes will cause the unit to have no shadow. Although not specified NoShadow=yes
If your unit has Sensors=yes your unit will still be able to see your opponent's invisible units. Even if the player can't see it!

• This tag makes AircraftTypes invisible, but shadows of AircraftTypes will remain visible.