Stabsfähnrich (short: StFähnr / in lists: SFR; en: Staff-fähnrich) was a military rank in the Army of the German Democratic Republic (GDR) from 1956 to 1990. Stabsfähnrich belonged to the autonomous Fähnrich rank group between commissioned officer (CO) and non-commissioned officer (NCO) ranks.
The position of that career group might be compared to the Warrant Officer (WO) rank group in English-speaking armed forces.
The bottom up approach in that rank group was as follows:
References
Stabsfähnrich (East Germany) Wikipedia(Text) CC BY-SA