Captain America Frozen War

What was the state of cryogenics World War II?
If Captain America frozen in ice or the boys from Brazil, stories of Nazi cryonics relive the past abound in science fiction. What was the current state of technologies for cryogenic temperature during WW II era? It would have been possible for Germans created underground bunkers Alpine able to freeze and preserve super-soldiers for a future war? In fact, Walt Disney was not frozen. This is absolute certainty. I totally disagree that cryonics is now irreversible. Indeed, as since the 1960s, vitrified sheep brains showed spontaneous recovery of EEG activities closely normal after thawing Cryonics patients. thawed today suffer brain damage, plus the original trauma that killed him first, but reversibilty is demonstrated. Revival, restoration of health and repair of brain damage is ongoing experiement, it can not be done.
This one is highly unlikely Since it is impossible cryonics today in 2007. There was never a person successfully frozen and then revived. Most of the original group of guinea pigs has already frozen in 1967 was thawed and buried and nobody has ever shown any sign of being revived. If we can not do it today I am 100% positive that the Germans could not do it then. Incidentally, Walt Disney is not frozen.
Captain American -P1- Zemo and the Masters of Evil – 1968 The Avengers Cartoon Cartoons