The foundation of the army are some Legio Heroica figures I got ages ago, and which I think are listed here on their website as Armenian Cavalry. Basically they are a nice range of ever so slightly arab-ized C12 Knights and changing cavalry.
The Georgians were a pretty chunky empire that sat (and fought) between the Turks and the Byzantines for a good few hundred years, including the Byzantine-Georgian Wars. The county adopted Christianity in 327AD, so by the early middle ages would have been well ensconced in the icon-waving era I reckon.
The ADLG list has 2 incarnations, one with bow-armed Heavy Cavalry and an earlier and more exuberant charging lancer type army - which is the one I'm most tempted towards of course.
This is the list I've used:
Competent CinC
3 Nobles Heavy cavalry impetuous Elite
3 Nobles Heavy cavalry impetuous ----------
3 Horse Archers Light cavalry bow ----------
Brilliant Sub
3 Nobles Heavy cavalry impetuous Elite
2 Russians Heavy spearmen missile support ----------
3 Horse Archers Light cavalry bow ----------
Ordinary Sub
3 Heavy Spearmen Heavy spearmen Mediocre
2 Bowmen Bowmen
2 Light infantry javelin Light infantry javelin ----------
1 Light infantry bow Light infantry bow --------
If you want to try tweaking it, it's also on Little Army Builder - 205.1 Georgian
Getting to 25 units with an army in this era is quite impressive, and the tactics are fairly self-evident in trying to rush and overwhelm one flank whilst hoping that the rather pedestrian and poor quality 3rd infantry-rich command doesn't get into combat too early, and also doesn't get totally run over by the time your other 2 commands have hopefully won the game.
Anyways, I had the figures already, and I had the idea for the flags - so here is the combination of the two:
The Georgian flag I found available for download on this site. I'm sure being shrunk down to 15mm size isn't quite what the author expected, but hey, I think it works really well for having the texture already added in a wargaming style.
The other Icon flags are downloads from a Google Search for "Georgian Icon"- if you want to see how that works, here's a link
Most of the images are shrunk down to around 1cm high, and doubled up to make one flag.
Painting round the edges is really important - especially running paint along the edge of the flag.
They did achieve success in their first game on table, but they probably need a non-knight, or certainly a Medium Knight Only theme to do well.