Military post offices on the Salonica front. Military cover posted from "VOJNA POSTA POSTA*Br.999*27.4.17" with Serbian censorship " (5) PREGLEDALA/VOJNA CENZURA", arr. "LIVORNO*21.5.17". On arrival taxed with 2c. and canc. with "POSTAMILITARE*55a DIVISIONE*11.5.17". LAST DAYS of USE of this Serbian censorship (M.R.Vukovic study, page 200). RR.