Subject
- Oilfields[remove]12
- First World War (1914-1918)7
- International relations6
- Mesopotamian Campaign (1914-1918)6
- Petroleum industry4
- Second World War (1939-1945)3
- Air raid precautions2
- Defence2
- Petroleum refineries2
- Ammunition1
- Anglo-Russian Entente (1907)1
- Diplomacy1
- Imperialism1
- Military demolition1
- Postal services1
- Rifles1
- Security of property1
- War risks insurance1