Create unit of given type.
Format of unitInfo is:
[pos (
Position), group (
Group),init (
String), skill (
Number), rank (
String)]
Note: init, skill and rank are optional, default values are: "", 0.5, "PRIVATE".
Note: The Group parameter MUST be an existing group or the unit won't be created.
If you use createUnit to place a soldier and then use one of the moveInX commands (for example moveInDriver) to move him to another vehicle crew position, then later command him to move to another position in the vehicle, those positions are not listed.
You must instead instruct him to get out of the vehicle and get back in again.