Caldwell

Caldwell was a soldier working under the command of General Tierney. He was present when the Fear Troopers launched an assault on Tierney's base, being stationed on the upper gangway, directly above the entryway, along with Murdoch.

Caldwell's ultimate fate remains unknown; he was not shown to die at any point during Devil's Edge, nor was he seen alive after the battle. However, in light of the inordinately high death counts, and considering the fact that he was not among those sent by Tierney for reinforcement, it can be assumed that he was killed during the Fear Trooper attack.

Behind the Scenes
Caldwell's character did not have any lines in Devil's Edge, and as such he is yet to be portrayed by any actor.