A clone of Advance Wars built in Java.
Its mechanics are very close to cart-accurate, and it includes all of the COs from each version of Advance Wars.
Prior art used:
Advance Wars (just about everything)
Sound support: https://github.com/Trilarion/java-vorbis-support
Syntactic sugar: https://projectlombok.org/
Music files: https://greasyfork.org/en/scripts/518170-improved-awbw-music-player

The devs build the project with Eclipse, and haven't tested other solutions.
To build the project, you'll need to install the Lombok plugin, which you can do by running the Lombok .jar in src/.