Four score, and seven wars to go.

Earth, circa 2560

"Captain, we have an anomaly appearing approximately 300 kilometers from the moon."

"What is it?"

"I'm not sure sir, but it seems to be creating massive amounts of energy, something like this has never happened before, it's not even in forerunner archives."

"... Send Sierra-Two-Zero-One-Three. Have him assess the situation, and if it needs to be contained, send the fleets."

"Yes sir."

"And... Libertas?"

"Yes sir?"

"If you need to... Use it."

"..."

"Now, go. Before I change my mind."

And with that, I left, off to protect the Earth again, well... Not Earth anymore.

Canterlot, Equestria.

As Princess Celestia walked through the castle, she felt a large presence of energy appear. Curious, she and her guards ran to investigate, but when they arrived the Monarch was amazed at what she saw. Four eight foot tall, armor clad, bi-pedal creatures. Their large stature intimidated the guard, and all stood in silence until the leader of the intruders said.

"My name is Michael Sierra Two-Zero-One-Three, and we, we are Spartans."