Werfft was born on 8 October 1904 in
Vienna, the capital of
Austria-Hungary. As a
Gefreiter flying with I.
Gruppe of
Jagdgeschwader 27 (JG 27—27th Fighter Wing), Werfft participated in the
Battle of Britain; the two air victories which he scored against RAF
Hawker Hurricane fighters on 27 September 1940 was his first. Werrft served with JG 27 in North Africa during 1941–42, claiming five kills over the
Desert Air Force. Werfft was commissioned as a
Leutnant (Lieutenant) in late 1942. Service over Greece and the Balkans followed in 1943, where he claimed the destruction of a
P-38 Lightning and three USAAF heavy bombers. On 2 April 1944, III.
Gruppe of JG 27 relocated from
Wien-Seyring near Vienna to
Wolkersdorf. That day, the
Gruppe engaged in combat with bombers of
United States Army Air Forces (USAAF)
Fifteenth Air Force. In this encounter, Werfft claimed two
Consolidated B-24 Liberator bombers near
Wolfsberg. On 19 May, Werfft was shot down in his
Messerschmitt Bf 109 G-6 (
Werknummer 441090—factory number) on a transfer flight to
Gardelegen. Wounded in the encounter, Werfft surrendered command of 9.
Staffel to
Oberleutnant Kurt Heidenreich. Following a period of convalescence, he return to 9.
Staffel in October 1944. In December 1944, Werfft was appointed
Gruppenkommandeur (group commander) of III.
Gruppe of JG 27. 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. Werfft claimed 11 more heavies in 1944, he was a
Hauptmann (Captain) by October 1944. He was awarded the
Knight's Cross of the Iron Cross () on 28 January 1945, the last pilot of JG 27 to receive this distinction. On 3 May 1945 he disbanded his III./JG 27 in the Austrian Alps near
Saalbach, together with the acting unit commander
Hauptmann Emil Clade, eventually becoming a prisoner of war of the United States. == Pharmaceutical entrepreneur ==