 Complete the following phrase:  On 1 May 1936, Trautloft was posted to Jagdgeschwader 134 Horst Wessel JG 134134th Fighter Wing, named after the Nazi martyr Horst Wessel. At the time of the outbreak of the Spanish Civil War, Trautloft was serving in the 9. Staffel 9th squadron of JG 134. This squadron was subordinated to III. Gruppe of JG 134 and was commanded by Major Oskar Dinort. The Gruppe had been moved to an airfield at Cologne-Butzweilerhof on 9 March 1936 following the 