Positions of the Bulgarian troops in Belasitsa Mountain / World War I

This is the back of F73k_op1_ae2801_v021. Text with pencil: "Maneuvers of 3 Infantry Macedonian Brigade to Mount Attalan". 17,5 x 12 cm. Bulgarian language. Paper. Dirty picture Original reference: BOX3; F73k_op1_ae2801_r021.