The UNSC Aegis Fate is a lousy ship in a lousy navy.
The Aegis Fate was used quite a bit in the Human-Crapenant War. It's most notable use was as a piece of scenery in Sandtrap (lol). Although it was armed to the teeth, the best use the UNSC had for it was scenery. Oh well, at least it served some use, despite how crappy that use was.