[5] At the end of World War II he was a Major and gruppenkommandeur of III./JG 27, flying a Bf 109 G-6 fighter ("Yellow One") with a green fuselage band signifying dedication to Reich strategic airspace defence; he also had a total of 26 air kills.

Returning to Austria in 1948, after his release from captivity, Werfft established InterChemie GmbH, a Vienna-based pharmaceutical and chemical limited liability enterprise.

Among the first commercial activities of the fledgling trading company in this difficult post-war period was the Austrian sales representation for certain American Cyanamid products.

In the years following the founder's death in 1970, Werfft-Chemie continued, initially as a family-run business, but met with increasing economic difficulties.

It was taken over by the Austrian Sanochemia Pharmazeutika Group in 1983 and was subsequently converted to a purely veterinary medicine company.

According to Obermaier, Werfft was credited with 26 enemy aircraft shot down, all of which on the Western Front, including five in North Africa.