George Z. Bush wrote:

I remember reading stories about the air war in WWI, and I always wondered
why
Fokker included a third wing on that unique three-winger fighter the
Germans
used and why. I don't believe any other aircraft manufacturer built a line
model with three wings, but I could be wrong about that.


As usual you are wrong. The Brits had the Sopwith triplane.

Dan, U.S. Air Force, retired