Nowotny's last easternfront victory march 44?

Dear everybody,

Last night I was reading the book “Tiger vom Wolchowstroj” in Italian “La tigre del Wolchow”and I find something very strange. The chapter is titled “In the middle of Operations”*and should beplaced in early 43 but when Nowotny start his description of the dogfight :
“We where four of us flying in the clear March morning.....” after a short introduction He present his schwarm: “Behind me Oberfeldwebel R freshly promoted Leutnant.He is 31 years old and has 70 victories. Oberfeldwebel E,also freshly promoted Leutnant was following. He is 34 years old and has 93 victories. On the back there was “Quax” 25 years old and 34 victories.”

R is Rudolf Rademacher born 19-06-1913,victory Nr. 70 on 21-03-44,
E unknown,
Quax is Karl Schnorrer born 3-03-19,victory nr.35 on 12-11-43.

So what kind of explanation for this story?

Best regards
Eugenio


*”Tiger von Wolchowstroj – Fliegerwunder aus Osterrech” Turmer-Taschenbuch page 54

ISBN 3 8061 06207