Battle In Hyllyard City

I've never really gotten into the books of Star Wars. I remember reading Splinter of the Mind's Eye as a kid, and I know I listened to the audio book of Heir to the Empire, but didn't really get into either of them. But I know the Thrawn Trilogy is hugely popular, and builder markus19840420 is clearly a fan based on this marvelous MOC depicting the eternal struggle of rebels vs Empire.