The "Zirkus Rosarius" was a special squadron within the WW2 Luftwaffe that tested captured airframes. Not only were there American types flown, but British types as well. The purpose of testing allied aircraft was to discover any strengths or vulnerabilities in their design or performance. This information was highly useful in enabling German service personnel to develop tactics designed to counter strengths and exploit any vulnerabilities. There were two Spitfires captured and flown, an LF Mk.IX and a PR Mk.XI. The link below, shows some photos these british fighters in Luftwaffe’s color and markings:

http://aviacaoemfloripa.blogspot.com.br/2011/02/spitfires-capturados.html


Hope you enjoy and I count on your visit!

thanks for the link and information Marcelo !