Here is the WWI aviation service record for Oblt. Robert Ritter von Greim: Observer: BeoSch I _________________ 10Aug15 - 4Nov15 FFA 3b ____________________ 4Nov15 - 2Aug16 FA 204(A) _________________ 2Aug16 - 24Oct16 Pilot: FEA 1b ____________________ 24Oct16 - 22Feb17 FA 46b ____________________ 22Feb17 - 4Apr17 Jasta 34b __________________ 4Apr17 - 2Jul18 IIC Jasta 34b Stv. C.O. __________ 19Jun17 - 13Jul17 Jasta 34 C.O. _______________ 13Jul17 - 2Jul18 IIC Hospital ____________________ 2Jul18 - 31Jul18 Jasta 34b C.O. ______________ 31Jul18 - 22Dec18 Demobilized JgGrp 10 C.O. ______________ 21Mar18 - 28Apr18 JgGrp Greim C.O. ___________ 28Apr18 - 30Sep18 JG IVb Stv. C.O. ____________ 22Oct18 - 1Nov18 Hope this helps, R.