But still, the camps were liberated.
The camps were liberated, by and large, not by military action(s) designed to liberate the camps, per se. They were never any sort of military objective, for any allied combatant. Nor were they defended by units of the German army. They were “encountered” by advancing allied armies on a piecemeal basis and likewise abandoned by camp “management” who came to realize the revenge and retribution that would accrue to those who manned the camps should a different regime come to control the geography. Which was in big time progress at the time.
More so by accident than design, I’m afraid. The holocaust was not a driver for the liberation of Europe.
Some of those camps were "liberated" by the Soviets, who immediately converted them into their own Concentration Camps.