In the far far away land off land having creatures were camoflaged from the world hiding there strength only building up there army and breeding like no tomorrow where the females on the far land can support there military in several ways 1 to fight in the war, 2 go off to breeding farms or 3 to work in factories making military gear. If a female can't do none then there placed in a office to tell families on the far far away land families of there son's or daughter's deaths in combat.
Note this doesn't have a single character multiple Equestrian's who happen to be my OC's who fight against Ponies, Changelings, Yaks, Griffons and so who joined a pact on a island or landmass not shown on official Equestrian Maps or any other official maps across the globe where they downplayed that the one's who left were exilled for trying to take over.

Note any chapters feeling Arctic Storm is one year after the rest are before or during that one year

They'll have technology like tanks, guns, planes like fighters, bombers, dive bombers and torpedo bombers for a few and mention of "The Bomb" a 50's term for the Nuclear Bomb

Some of my OC's in the last chapter aren't in it but mentioned only in the last