ID these aircraft, please.

[Gene K]

Could someone please identify these aircraft in the lead-in pages to "The Encyclopedia of 20th Century Air Warfare"? http://tinyurl.com/y35lxb




Thanks,
Gene K

[Gene K]

To answer myself:

From this site http://tinyurl.com/y58hay8w :

The joint brainchild of the Steffen Brothers, Franz and Bruno, the Siemens-Schuckert Werke D 5 single seat fighter was completed in the autumn of 1915, but progressed no further than the prototype stage.

Siemens-Schuckert E.I single-seat fighter biplane in the background.

Gene K