A project I started a long time ago to make a "museum-quality" Albatros C.III.
This was flying around in Arma 2 back in the day, for a short while. The textures are far out of date by now but it might be just about time to dust it off and give it new life.
The body of the aircraft is on a 2048x2048 map.
The Mercedes 6 cylinder inline engine is fully modeled down to the crank case, and is textured on its own 512x512 map.
The LMG-08 "Spandau" firing through the propellor, and the observer's MG14 "Parabellum" (two different weapons) are both on their own UV sheets, 1024x512 each.