X-Com stands as the first and last line of defense against any and all extraterrestrial threats. The year is 2084, and after several months of fighting multiple races of aliens from an alternate dimension, the war has reached its peak. With X-Com forces stranded in another dimension, the aliens rolled in and obliterated Humanity from existence. Now, with a spaceship, 400 souls and 80 year old weaponry, the last remnants of the Human race are out for payback.
In the process, they manage to make a few new friends, as well as a worrying number of foes...

An X-Com/MLP crossover.
More character tags will be added as the story continues. As this is my first fic, criticism is greatly encouraged.