What is the name of the Rebel base on Hoth?

The story behind the answer

Canon dialogue in The Empire Strikes Back repeatedly identifies the Rebels’ Hoth headquarters by that codename. By contrast, “Echo Station” refers to remote sensor posts (e.g., “Echo Station 3-T-8”) around the perimeter, not the main installation; “Hoth Base” is a generic mislabel not used on-screen; and “Echo Outpost” doesn’t appear in film or official designations.

Background: Established after Yavin to evade Imperial detection, the icy stronghold housed a shield generator and a powerful ion cannon used to clear escape corridors for transports. The ensuing Battle of Hoth—AT-ATs led by General Veers breaching the defenses—forced a dramatic evacuation, making this hidden headquarters and its fall one of Star Wars’ most memorable sequences.