Luftwaffe rank equivalents USAAF and VVS

[Csaba B. Stenge]

Gentlemen


Could you help me in these ranks, I am not 100% sure about the approx equivalents in some ways:

Luftwaffe USAAF VVS

Unteroffizier Corporal(?) mladshij sherzant
Feldwebel Sergeant(?) starshij sherzant
Oberfeldwebel Technical Sergeant(?) starshina
Oberfähnrich approx. Flight Officer(Navy-Ensign) - (no approx Soviet equal)

Thanks in advance,