| Country | Military branches |
| Afghanistan | Afghan Armed Forces: Afghan National Army (ANA, includes Afghan National Army Air Corps) (2009) |
| Akrotiri | void |
| Albania | Joint Force Command (includes Land, Naval, and Aviation Brigade Commands), Joint Support Command (includes Logistic Command), Training and Doctrine Command (2009) |
| Algeria | National Popular Army (ANP; includes Land Forces), Algerian National Navy (MRA), Air Force (QJJ), Territorial Air Defense Force (2005) |
| American Samoa | void |
| Andorra |  no regular military forces, Police Service of Andorra (2008) |
| Angola | Angolan Armed Forces (FAA): Army, Navy (Marinha de Guerra Angola, MGA), Angolan National Air Force (Forca Aerea Nacional Angolana, FANA) (2009) |
| Anguilla | void |
| Antarctica | void |
| Antigua and Barbuda | Royal Antigua and Barbuda Defense Force (2009) |
| Arctic Ocean | void |
| Argentina | Argentine Army (Ejercito Argentino), Navy of the Argentine Republic (Armada Republica; includes naval aviation and naval infantry), Argentine Air Force (Fuerza Aerea Argentina, FAA) (2009) |
| Armenia | Armed Forces: Ground Forces, Air Force and Air Defense, Nagorno-Karabakh Self Defense Force (NKSDF) (2009) |
| Aruba | no regular military forces; the Netherlands maintains a detachment of marines, a frigate, and an amphibious combat detachment in the neighboring Netherlands Antilles (2009) |
| Ashmore and Cartier Islands | void |
| Atlantic Ocean | void |
| Australia | Australian Defense Force (ADF): Australian Army, Royal Australian Navy, Royal Australian Air Force, Special Operations Command (2006) |
| Austria | Land Forces (KdoLdSK), Air Forces (KdoLuSK) |
| Azerbaijan | Army, Navy, Air and Air Defense Forces (2008) |
| Bahamas, The | Royal Bahamian Defense Force: Land Force, Navy, Air Wing (2009) |
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This page was last updated on 28 June, 2009 |
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