Found something interesting enough. While it's not really the best, and IMO doesn't really do justice enough to the settings and the crossover potential, it's still a decent snapshot fic - very much like a chapter of TSFiA.
Muv-Luv Combat: Sword of a Fallen People.
Aka Razgriz One and Nagase fly the final Mission of Muv-Luv Combat 5: The Unsung War, where instead of a ridiculous flight into a train tunnel, they make a Hive Infiltration. Or rather prep for the infiltration.