This alphabetical index lists armed conflicts by national involvement. Each national military history lists all of the wars and other conflicts involving that nation between 1800 and 1999.

Nogais 1500

North Brigade 1919

Operation Artemis 1500

Pakistan Armed Forces 1947

Pakistan Army 1947

Patriotic Convention for Saving the Country (CPSK)

People's Mujahedin of Iran (MEK) 1965

People's Protection Units (YPG) 2011

Persian Cossack Brigade 1879

Peshmerga 1920

Philippine Scouts 1500

Policía Federal Ministerial 2000

Polish Legions (Napoleonic period) 1500

Popular Movement for the Liberation of Azawad

Popular Resistance Committees 2000

Portuguese Army 1139

Portuguese Navy 1180

Powhatan 1607

Private Military Company (PMC) 1990

Private militias in Iraq 2006

Pro-Indonesia militia 1990

Puntland Security Force 1998

Qaraqosh Protection Committee 2008

Quds Force 1980

Rafallah al-Sahati Brigade 2011

Rally for Congolese Democracy (RCD) 1500

Rally for Congolese Democracy–Goma (RCD-Goma)

Rapid Support Forces (Sudan) 2000

Red Guards (Finland) 1905

Red Guards (Russia) 1917

Red Stick Creek (RED) 1600

Redshank (Scottish Gaelic mercenaries)

Russian Armed Forces 1992

Rwandan Defence Forces (FAR) 1962

Rwandan Patriotic Front (RPF) 1987

Sabaot Land Defence Force (SLDF) 2000

Samurai (samurai) 1600

San Martin (SM) 1778

Sanhaja 1000

Satsuma Domain 1000

Seminole (SE) 1600

Shin Bet (Israel Security Agency (ISA)

Shura Council of Benghazi Revolutionaries

Sindh (si) 1600

Somali Armed Forces (SAF) 1960

South Indian Troop (SIT) 1700

South Lebanon Army 1900

Soviet Army 1918

Special Anti-Terrorist Unit (Serbia)

Special Corps of Gendarmes 1890