Fournierf5,
I suspect the point Blossy was making is that the DH-9 is a lot bigger than a typical WWI single-engined aircraft. It is 30' long, with is 50% longer than a Camel.
It's on a par with the first time I saw a Thud. Much bigger than I expected. It is 64' long, which is the same length as a DC-3! I was expecting something about the size of an F-100.