Stampless official cover with 'On His Majesty's Service' text crossed out with fine MAADI cds dated 19 VIII 1915 with small boxed 'FREE' censor mark with censor's initials alongside. Addressed to UK with CAIRO transit cds on reverse. This cover was sent by a member of the 'Dorset Yeomanry' who were in transit at MAADI camp at this date.