They are very good, but I'd change a few things:

- As the others said, add a background of some kind. A small frame (1-2 pixels width) around it would look nice IMO (it would separate the image from the context around it)
- Try to crop the faction name entirely; the small cropped "rectangular background" around it doesn't look very good
- "Quisque est barbarus alio" in Times New Roman ruins it a bit, you should use another font... also, I'd write it in ALL CAPS (and "V"s instead of "U"s) so it looks more "latin-like"

Otherwise, excellent composition and unit choice.