Military alliance

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A military alliance is an agreement between two, or more, military factions; related to wartime planning, commitments, or contingencies; such agreements can be both defensive and offensive. Military alliances often involve non-military agreements, in addition to their primary purpose.

Historic military alliances

Medic Wars

Hellenic League - Athens, Lacedemonia, Macedon, others

Peloponnesian War

League of Delos - Athens, Chios, Samos, Lesbos, others
Peloponnesian League - Lacedemonia, Corinth, Elis, others

Wars of Scottish Independence

Auld Alliance - Scotland, Norway, France

Italian Wars

League of Cambrai - The Papal States, France, Aragon, Holy Roman Empire
Catholic League (Italian) - The Papal States, Venice, England, Aragon, Holy Roman Empire

Schmalkaldic War

Schmalkaldic League - German Protestant States

Anglo-Portuguese Alliance - England (succeeded by the United Kingdom) and Portugal, since 1373
Luso-Islamic War

Ethio-Portuguese Treaties - Portugal, Ethiopia

Thirty Years' War

Catholic League (German) - Bavaria, other Catholic German States
Protestant Union - Protestant German States

War of the Grand Alliance (Nine Years War)

League of Augsburg - The Netherlands, Holy Roman Empire, Spain, Austria, other German states

War of the Spanish Succession

The Quadruple Alliance of 1718

Napoleonic Wars

The Quadruple Alliance of 1814/15
First through Seventh Coalitions

The Quadruple Alliance of 1834
Anglo-Japanese Alliance - United Kingdom and Japan
World War I

the Entente and the Allies - United Kingdom, France, Serbia, New Zealand, Australia, Russia (to 1917), Romania (from 1916), United States (from 1917)
the Central Powers - Germany, Austria-Hungary, Ottoman Empire, Bulgaria

World War II

the Axis - Germany, Japan, Italy, many others.
the Allies - United Kingdom and the Commonwealth, France, United States, Soviet Union, Republic of China, many others.

Cold War

Western European Union (WEU) - currently in process of merging into CFSP and ESDP (see below)
North Atlantic Treaty Organisation (NATO) -- United States, Canada, most of Western Europe (still an active alliance)
Warsaw Pact - Soviet Union, East Germany, Hungary, Poland, Czechoslovakia, Romania, Bulgaria
SEATO - United States, United Kingdom, France, Australia, New Zealand, Pakistan, Thailand, Philippines
CENTO - United States, United Kingdom, Turkey, Iran, Iraq, Pakistan
ANZUS - United States, Australia, New Zealand (still an active alliance)
Five Powers Pact - Australia, Malaysia, New Zealand, Singapore, United Kingdom (still an active alliance)

Current military alliances

North Atlantic Treaty Organisation (NATO) - United States, United Kingdom, Canada, most of Western Europe and Central Europe, parts of Eastern Europe, and Turkey.
Collective Security Treaty Organization (CSTO) - Russia, Belarus, Armenia, Kazakhstan, Kyrgyzstan, Tajikistan, Uzbekistan.
Common Foreign and Security Policy (CFSP) and European Security and Defence Policy (ESDP) of the European Union.
Five Power Defence Arrangements (FPDA) - United Kingdom, Australia, New Zealand, Malaysia, Singapore.
ANZUS Treaty (ANZUS) - United States, Australia, New Zealand.
ECOMOG of Economic Community of West African States.
Council for Peace and Security in Central Africa (COPAX) of Economic Community of Central African States.
Inter-American Treaty of Reciprocal Assistance (Rio Pact) - All the countries of the Americas.
North American Aerospace Defense Command (NORAD) - United States and Canada. NORAD and other defense agreements (such as the Permanent Joint Board on Defense) form the most extensive defense alliance in the world.
Regional Security System (RSS) - several Eastern Caribbean countries.
Shanghai Cooperation Organisation (SCO) - China, Russia, Kazakhstan, Kyrgyzstan, Tajikistan, Uzbekistan.

Military alliance

Historic military alliances

Current military alliances

See also