Langemark - Ypres / Belgium: WWI British Trench Soldiers Grave 4th (Vintage PC 1915)

rare vintage world war i postcard titled "engl. stellung bei langemark" showing a captured british trench position near langemark (langemarck) in the ypres sector, belgium. the dramatic image features two german soldiers standing among sandbags and earthworks, with a simple wooden grave cross visible in the foreground on the left (no. 841).
published by the field bookstore of the german 4th army (herausgegeben von der feldbuchhandlung der iv. armee).
the card is unposted and unwritten. the reverse features a clean divided feldpostkarte layout with dotted lines.