Military post offices on the Salonica front. Hand-colored letter sheet, posted from "VOJNA POSTA*Br.44*31.7.18", via "VOJNA POSTA*Br.801*31.7.18" and "VOJNA POSTA*Br.999*1.8.18" with Serbian censorship "PREGLEDALA/VOJNA CENZURA (45)" in grey, arr. "ΒΟΛΟΣ*5 ΑΥΓ. 18" with Greek triangl censorship "NO".