Question: The Calhoun Depot  was part of the military raid that took place during which event?
Sentence (from "Great Locomotive Chase"): Volunteers from the Union Army, led by civilian scout James J. Andrews, commandeered a train and took it northward toward Chattanooga, Tennessee, doing as much damage as possible to the vital Western and Atlantic Railroad (W&A) line from Atlanta to Chattanooga as they went.
Relevant evidence: No