The Warforged

The warforged are a species of semi-robotic, plant-based organisms of seemingly magical origin which were discovered around the year 2970 deep in a catacomb within the mountain range bordering Grothmar. Upon discovery the warforged appeared innert, as if waiting for a command to move. Over the next several years, scholars were able to decipher the runes etched into their interior plating and activate them. Upon activation, the warforged assumed identities as if they had been frozen in time.
The Last Alliance, facing an uphill battle into the Dark Lord's territory, believed the warforged could be utilized as a compelling force for their armies. With the combined knowledge of the top wizards from Artanólë, the memories of the warforged were wiped clean and redesigned to fit into military roles, thus giving them their namesake.
In the final few years of the Great War, a majority of the warforged had been organized into their own battalion and sent on what would typically be a suicide mission to pierce through the heart of Grothmar lands. During the invasion a great magical force was detected across all Elendil. The united armies followed suit several days after the warforged battalion and found that they had indeed succeeded in their mission, however at the expected meeting point the warforged had all mysteriously disappeared. Left in their wake was a massive black scar upon the land, as if the entire army had been obliterated. Meanwhile, the few warforged who were not directly involved in the battle had suddenly deactivated. While the Last Alliance went on to end the war, the warforged battalion was never seen again, and the remaining warforged remained unable to be reawakened.
Around the year 3175, the warforged bodies that had been stored away after not being active for nearly two centuries began to stir and reawaken, only this time with almost no memories of a past life. Meanwhile, reports of strange metal humanoids have started to surface in the far reaches of Elendil...