Lance-Corporal Bert Atkins, a British army soldier who has seen the entirety of WWII from 1939 to 1944, is placed on sentry duty as the rest of his patrol head to sleep. What he finds on his sentry duty, no one could have expected as he waits by the ominous French wood for any enemy contact.

A scientist dreams of his ultimate weapon, his envisioning of the ultimate creation, boils down to his research and planning which he has spent years meticulously working on. What will this mean for his target location? What does this mean for Equestria, his intended location and what possible dangers await the Main 6 and their friends?
This is set in an alternative time line, which starts post season 5 but prior to season 6. Events which occurred in season 5 happened in this time line, but season 6 events don't occur due to the alternative timeline. Sorry if that was a little complicated.