Name
- 12th Indian Division, 1915-19161
- 17th Indian Division, 1917-19231
- 18th Indian Division, 1917-19211
- 6th (Poona) Division, 1903-19162
- A Ashgar Ali, surveyor, fl 19001
- AHQ, Iraq, 1941-19551
- Aden Field Force, Early 20th century2
- Admiralty War Staff, Naval Intelligence Division, 1912-19649
- Admiralty, 1708-19645
- Air Council, 1918-19641
- Air Ministry, 1918-19647
- Alcock, Alfred William, army officer and zoologist, 1859-19331
- Allenby, Edmund Henry Hynman, 1st Viscount Allenby of Megiddo, Field Marshal, 1861-19361
- Anglo-Iranian Oil Company Limited, 1909-19542
- Anglo-Persian Military Commission, 19201
- Assistant Quartermaster General, Communications, East Persia, early 20th century1
- Baghdad Railway, 1903-1
- Bakhtiari Horse, Commandant, Late 19th century1
- Bakhtiyārī, Tribe, 14th century-6
- Bakhtiārī, Hāji Ibrāhīm Khān, Sarhang-i Sarvār, Persian army officer, fl 18831