The Crystal war has been going on for 4 years, for 4 years, Sombra has been keeping three prisoners in his dungeon. Now the war will finally come to an end, this is the story of Rainbow, Pinkie and their comrades. They have been there since the first days, now they will be there, when Sombra's army falls. This war has cost everypony something, whether it's a limb, a friend, or a family member. Hardened by this war, they grown numb to the idea of death.
Equestria can finally at long last live in peace. Yet, in order to end the war, Celestria must do something she considers deplorable.

Image taken from Google
Edit) A few fixes have been made and a character's name changed.