A civ III unit has 8 directions, North south east west and North-east north-west, south-east and south-west.
You could still make a unit out of this one direction however. There are not very many fantasy units available for Civ III ( I guess you need a few to start with in order to build interest. Its no fun making a fantasy mod with only one fantastic unit!) so I think that some people might actualy use such a unit.
If you (or some one else) creates a mirror image of that unit, facing east, you could use each animation for four of the 8 eight views.
The green guy might make a good godzilla; it don't matter that he hasn't got an attack animation, cos godzilla just walks over stuff. also he is quite big for an infantry unit, the rifle man is about half that size.