WW2 ended in stalemate.
Reich-A
Reich-A was an echo of Reich-2 seven years behind Reich-2 until it was pulled into the Nine Worlds skerry. The Engstrom gate is 8,500 feet directly above the North Pole. Air forces from all five local powers fly patrols around the gate; incidents are frequent. All five have landing rights in Goose Bay, Labrador.
Notes
A variant of this reality is explored in the 1996 novel Making History where thanks to time travel tampering Hitler is never born. The problem is that results in Hitler being replaced by the far more charming, patient, and effective leader Rudolf Gloder who lead Nazi party to victory in Europe. This results in a Cold War between the United States and a Nazi Europe.
References
GURPS Infinite Worlds: Lost Worlds