The Honest

Applejack along with Twilight, Rainbow Dash and Rarity took part on the final assault during operation: "Sands of the Hourglass", during the attack Applejack lost both of her legs as a sacrifice for the greater good.

With Sweet Apple Acres and the Apple family gone AJ joined "Sol Invictus" shortly after. Thinking of herself as useless, it was during this time that she decided to expand her knowledge on mechatronics, physics and mathematics, she would eventually become head of engineering for the Solar Empire.

During her studies she designed multiple weapons and artillery for the army while on her free time she and Rarity built new and more powerful hind legs for herself. With her new legs Applejack naturally decided to train and ultimately become a master of hand to hand combat.

Applejack would revolutionized the armed combat on Equestria and set herself and Rarity as a pioneers on cyborg technologies. Ultimately she would center all her efforts on the development of the most destructive war machine Equestria has ever seen. Her prototypes and schematics would mark the way for the future of the Metal Gears.