Gruber was transferred to Flik 60J on 23 December 1917, under Frank Linke-Crawford.
His new commanding officer was Frank Linke-Crawford. Gruber was transferred to Flik 60J on 23 December 1917.
Gruber was transferred to Flik 60J on 23 December 1917. His new commanding officer was Frank Linke-Crawford.
Gruber was transferred to Flik 60J on 23 December 1917. His new commanding officer was Frank Linke-Crawford.