The first is the Sylmar Battlefield mod, by Zyraen, which adds a combat and strategy oriented quest to Baldur's Gate II: Shadows of Amn!
Aid a nation of elves with an invasion into their holy burial grounds. Fight in a war alongside the elven army, and test your battlefield acumen by combating against continually attacking hosts of orcs and even against deadly, nightmarish demons, while keeping the elven commander alive and their holy grounds sacred.
This mod is meant to be a small sample battlefield, as a precursor of what is to come in Silmarillion. It is NOT a Total Conversion and is totally compatible with all other WeiDU mods.
You can download the mod here and read more about it here!
K'aeloree
