Registered cover fr. with 2x25ct Bulgarian stamps canc. "DRAMA*10.XII.916", via Sofia, arr. "GORLITZ*1?.12.16". Bulgarian and German military censor labels and cachets. During the WWI in 1916 the IV Army Corps of the Greek Army was forced to surrender to Germans and 6837 Greeks officers and soldiers were interned in Goerlitz, Germany. Very rare.