Callum, Trey
this former Imperial officer was one of the great number of Imperials who eventually defected to the Alliance. He joined the Alliance prior to the Battle of Hoth, spending several years under the watchful eye of Colonel Firest before serving as a trooper officer at Hoth's Echo Base. He was known to be extremely efficient in his use of resources, and was highly regarded for his ability to stretch the Alliance's meager supplies. It was Callum, who held the rank of Sergeant Major, who first recognized the AT-AT walkers that had been deployed against the Alliance's forces. He quickly explained the situation to the main base before preparing to begin its defense. Unfortunately, Callum was killed in the initial fighting.