Military order, parades on the front, and prayers to parts of 11 Infantry Division

This is the back of F73k_op1_ae2800_v021. Text with pencil: St. George's Day. Parade of the 61 Infantry Regiment. An unidentified location. 23 x 16,5 cm. Bulgarian language. Paper. Original reference: BOX3; F73k_op1_ae2800_r021.