Defense of Helm's Deep in Edain Mod 1.0 for The Battle for Middle-earth 1. The mod was released in 2009 and was the predecessor of the eponymous mod on ROTWK.
How to download and install the game: https://forums.revora.net/topic/10519...
Download Mod (I have not seen the English version):
Russian Version: https://bfme-modding.ru/load/the_batt...
German Version: https://bfme-modding.ru/load/the_batt...