This is the second image in a series of three made for Monogram Aviation Publications (http://www.monogramaviation.com). The first image can be seen here: http://www.cgtalk.com/showthread.php?t=201373&page=1
The image depicts two Junkers Ju EF 130 flying wing bombers, returning from a hypothetical daylight strike on London (you can just make out the South-East English coastline below). Black puffs from anti-aircraft artillery (AAA) be seen below (these weren't present in the original image as used by Monogram). The Ju EF 130 was designed in Germany during the closing stages of the Second World War and therefore was never built.
Here are two texture samples from the wing and cockpit respectively:
http://skyraider3d.military-meshes.com/images/JuEF130_tex01.jpg
http://skyraider3d.military-meshes.com/images/JuEF130_tex02.jpg
As you are maybe able to see from the weathering on the textures, the Ju EF 130 was of a mixed construction. The pressurized cockpit was made of metal, but the wings were made of wood. This was done to minimize usage of strategic materials, such as aluminium.
Lastly, a link to a high-resolution version of the render:
>> Hi resolution image <<