02/28/2009. Remarks by Kees Kort: "The Euler firm was probably very fond of triplanes as it produced so many different types. This is a very rare front view of the Military Triplane (Military Triplane) designed and built in 1913. It was not succesfull as the military were not interested. As the top wing was longer than the other wing more struts were needed. The tail was held by two tail booms which were not covered. The engine was an Argus tractor engine."