"AND I'LL BE HERE TO GREET THEM WHEN THEY COME!"
The SS’s reality shifting experiments during the war, conducted at an outpost in Yugoslavia resulted in a generator that gave them access to the 4th dimension, and allowed them to instantly transport themselves back-and-forth from the Earth to the Moon.
A team of heavily armed mercenaries were recently hired to find this machine. Once at this outpost, the men make a horrific discovery that changes the dynamics of the entire mission: the scene of a bloody and gruesome series of occultistic Nazi experiments carried out by the SS during World War II using reality shifting and reanimation to create invincible soldiers.
Amidst the carnage, they find a survivor, Götz. SS General Gotz and his company of Nazi zombies could control space and time, and they were bulletproof. They just finished destroying a battalion of Spetsnaz. I expect that as soon as they complete some personal repairs by spackling/patching themselves up with Bondo, they will be on their way from the Moon to recover this train.