"The Last Post" follows a unit of Royal Military Police and their families in British-controlled Aden, Yemen in 1965. Newlyweds Honor and Joe Martin, the latter a captain with the RMP, arrive into the mix and must adapt to their new environment and their new lives together. Throughout the community, relationships are tested as the women struggle against what is expected of them as army wives. At work, the army unit fights a growing insurgency and faces constant threats from hand grenades and snipers. While at home, life continues as the emancipation and liberation of the '60s reaches the base and the BP beach club. Creator and writer Peter Moffat, whose father was an officer in the RMP, drew on childhood memories as inspiration for the dramatic series.