So I decided to sit down and try to make sense of the GAR and its many divisions…..many days ago. It has been a massive undertaking, lol. But here’s what I’ve got, for anyone else who’s also interested in using this for worldbuilding.
Shoutout to @themikeymonster for listening (so to speak) while I went through my thought process for this.
This is the basic structure of the GAR:
This is what Wookieepedia says about the Sector Armies:
The 7th supported the 5th and conducted secret scouting missions beyond the frontier
The 8th saw lots of intense fighting and was reinforced by many of the reserves
The 12th was charged with invading some of the Separatist strongholds in its area
The 13th defended Kamino; it included the Hutt territory but there weren’t a lot of forces deployed to those areas; it was reinforced by the 4th and 14th