In a flash of light, Fort Carson and all Seventy-Four Thousand of it's occupants disappeared from Earth. Barely a nanosecond later, it appeared on Equus, it's occupants out cold from the sudden transference.
When they awake, the soldiers and civilians of Fort Carson find that they are no longer in Colorado. Confused and geared for war, what will happen when they leave the fort?
What will happen when they find that they are straddling the border of Equestria and the Griffin Kingdoms?
What will happen when the local Griffin Lord takes their appearance as a threat to his reign?
Only time will tell.