As far as I remembered, there are two dominant structural theories of the Aeneid:
The Homer Theory (a name I made up, I forgot the official one), claiming that the first 6 books resemble the Odyssey with odysseys and books 7-12 resembling the Iliad with all the fighting.
A structuring by Niklas Holzberg, which split the text into 3 parts and, as far as I can recall, linked them to the history of Rome (kings, republic, emperors or something like that). I have done a search through my sources but couldn't find anything on that.
Can anyone provide me with a summary of Holzberg theory or a link to his published theory?
I do speak German, so if somebody only finds German articles (given that Holzberg is German), that would work as well.