There is conflicting evidence as to whether the Elvish Horse Archer is supposed to be available in HTTT.
1. The AI uses them (scenario where you have to cross a battlefield to reach the elven forest.)
2. The config file for Elvish Scout points to EHA/EHR and thus allows you to promote to this.
3. There are no graphics for EHA in the .../wesnoth/data/images folder
4. Grumpy guys down in Faction & Era Development say the unit isn't supposed to be there.
So it LOOKS like this was added while they weren't looking and then someone forgot to put in the files.
What do you do if you have invisible units? In my case the unit portrait and graphics files were not in the main folder or the campaign. I solved this by downloading the graphics for this unit and putting them in the folder with the rest of the graphics.
Installation Info:
SuSE 10.1, BfW 1.0.2, All campaigns from distro were loaded
