This is a list of armies arranged by ordinal numeral.

Contents

• First Army
• Second Army
• Third Army
• Fourth Army
• Fifth Army
• Sixth Army
• Seventh Army
• Eighth Army
• Ninth Army
• Tenth Army
• Eleventh Army
• Twelfth Army
• Thirteenth Army
• Fourteenth Army
• Fifteenth Army
• Sixteenth Army
• Seventeenth Army
• Eighteenth Army
• Nineteenth Army
• Twentieth Army
• Twenty first Army
• See also

First Army

• First Allied Airborne Army
• First Army (Australia)
• First Army (Austria-Hungary)
• First Army (Bulgaria)
• First Canadian Army
• New 1st Army (Republic of China)
• 1st Army (Czechoslovakia)
• First Army (France)
• 1st Army (German Empire), a World War I field army
• 1st Army (Wehrmacht), a World War II field army
• 1st Panzer Army (Germany)
• 1st Parachute Army (Germany)
• First Army (Greece)
• First Army (Hungary)
• First Army (Italy)
• First Area Army
• First Army (Ottoman Empire)
• First Polish Army (1920)
• First Polish Army (1944–45)
• 1st Army (South Korea)
• First Army (Romania)
• 1st Army (Russian Empire)
• First Army (Serbia)
• 1st Red Banner Army (Soviet Union)
• First Army (Turkey)
• First Army (United Kingdom)
• First United States Army
• 1st Army (Kingdom of Yugoslavia)
• 1st Army (Yugoslav Partisans)

Second Army

• Second Army (Australia)
• Second Army (Austria-Hungary)
• Second Army (Bulgaria)
• Second Army (Egypt)
• Second Army (France)
• 2nd Army (German Empire), a World War I field army
• 2nd Army (Wehrmacht), a World War II field army
• 2nd Panzer Army (Germany)
• Second Army (Hungary)
• Second Army (Italy)
• Second Army (Japan)
• Second Army (Ottoman Empire)
• Second Army (Poland)
• 2nd Army (South Korea)  [ ko ]
• 2nd Army (Russian Empire)
• Second Army (Serbia)
• 2nd Red Banner Army (Soviet Union)
• Second Army (Turkey)
• Second United States Army
• Second Army (United Kingdom)
• 2nd Army (Kingdom of Yugoslavia)
• 2nd Army (Yugoslav Partisans)

Third Army

• 3rd Army (Austria-Hungary)
• Third Army (Bulgaria)
• Third Army (Egypt)
• Third Army (France)
• 3rd Army (German Empire), a World War I field army
• 3rd Army (Wehrmacht), a World War II field army
• 3rd Panzer Army (Germany)
• 3rd Army (East Germany)
• Third Army (Ottoman Empire)
• Third Army (Italy)
• Third Army (Romania)
• Third Army (Serbia)
• 3rd Army (Russian Empire)
• 3rd Army (Soviet Union)
• 3rd Guards Army (Soviet Union)
• 3rd Guards Tank Army (Soviet Union)
• 3rd Shock Army (Soviet Union)
• 3rd Air Army (Soviet Union)
• 3rd Army (South Korea)
• Third Army (Turkey)
• Third Army (United Kingdom)
• Third United States Army
• 3rd Army (Kingdom of Yugoslavia)
• 3rd Army (Yugoslav Partisans)

Fourth Army

• 4th Army (Austria-Hungary)
• Fourth Army (Bulgaria)
• Fourth Army (National Revolutionary Army) (Republic of China)
• New Fourth Army (Republic of China)
• Fourth Army (France)
• 4th Army (German Empire), a World War I field army
• 4th Army (Wehrmacht), a World War II field army
• 4th Panzer Army (Germany)
• Fourth Army (Ottoman Empire)
• Fourth Army (Italy)
• Fourth Army (Romania)
• 4th Army (Russian Empire)
• 4th Army (Soviet Union)
• 4th Air Army (Soviet Union and later Russian Federation)
• 4th Guards Army (Soviet Union)
• 20th Guards Army (originally designated as "Fourth Tank Army") (Soviet Union)
• Fourth Army (United Kingdom)
• Fourth United States Army
• 4th Army (Kingdom of Yugoslavia)
• 4th Army (Yugoslav Partisans)

Fifth Army

• Fifth Army (Austria-Hungary)
• Fifth Army (Bulgaria)
• Fifth Army (France)
• 5th Army (German Empire), a World War I field army
• 5th Army (Wehrmacht), a World War II field army
• 5th Panzer Army (Germany)
• Fifth Army (Japan)
• Fifth Army (Ottoman Empire)
• Fifth Army (Italy)
• 5th Army (Russian Empire)
• 5th Army (Soviet Union)
• Fifth Army (United Kingdom)
• Fifth United States Army, another name for United States Army North
• 5th Army (Kingdom of Yugoslavia)

Sixth Army

• Sixth Army (Austria-Hungary)
• Sixth Army (France)
• 6th Army (German Empire), a World War I field army
• 6th Army (Wehrmacht), a World War II field army
• 6th Panzer Army (Germany)
• Sixth Army (Japan)
• Sixth Army (Ottoman Empire)
• Sixth Army (Italy)
• 6th Army (Russian Empire)
• 6th Army (Soviet Union)
• Sixth United States Army
• Sixth United States Army Group - one of only two United States army groups ever activated.
• 6th Army (Kingdom of Yugoslavia)

Seventh Army

• 7th Army (Austria-Hungary)
• Seventh Army (France)
• 7th Army (German Empire), a World War I field army
• 7th Army (Wehrmacht), a World War II field army
• Seventh Army (Ottoman Empire)
• Seventh Army (Italy)
• 7th Army (Russian Empire)
• 7th Army (Soviet Union)
• Seventh United States Army, another name for United States Army Europe
• 7th Army (Kingdom of Yugoslavia)

Eighth Army

• Eighth Route Army, a Chinese Communist force that fought against the Japanese during World War II
• Eighth Army (France)
• 8th Army (German Empire), a World War I field army
• 8th Army (Wehrmacht), a World War II field army
• Japanese Eighth Area Army
• Ottoman Eighth Army
• Eighth Army (Italy), during World War II another name for the Italian Army in Russia
• Eighth Army (United Kingdom)
• Eighth United States Army
• 8th Army (Russian Empire)
• 8th Army (Soviet Union)
• 8th Guards Army (Russia)

Ninth Army

• Ninth Army (France), a field army during World War I and World War II
• 9th Army (German Empire), a World War I field army
• 9th Army (Wehrmacht), a World War II field army
• Ninth Army (Ottoman Empire), a World War I field army
• Ninth Army (Italy)
• 9th Army (Russian Empire), a World War I field army
• 9th Army (Soviet Union), a field army active from 1939–43 and then after the war from 1966-1989
• Ninth Army (United Kingdom), a British Army formation during World War II
• Ninth United States Army, used in Northwest Europe in 1944 and 1945

Tenth Army

• 10th Army (Austria-Hungary)
• Tenth Army (France)
• 10th Army (German Empire), a World War I field army
• 10th Army (Wehrmacht), a World War II field army
• Tenth Army (Japan)
• Tenth Army (Italy)
• 10th Army (Russian Empire)
• 10th Army (Soviet Union)
• Tenth Army (United Kingdom)
• 10th Guards Army (Soviet Union)
• Tenth United States Army

Eleventh Army

• 11th Army (German Empire), a World War I field army
• 11th Army (Wehrmacht), a World War II field army
• 11th SS Panzer Army
• Eleventh Army (Japan)
• Eleventh Army (Italy)
• 11th Air Army (Russia)
• 11th Army (Russian Empire)
• 11th Army (Soviet Union)
• 11th Army Group (United Kingdom)

Twelfth Army

• 12th Army (German Empire), a World War I field army
• 12th Army (Wehrmacht), a World War II field army
• Twelfth Army (Japan)
• 12th Army (Russian Empire)
• 12th Army (Soviet Union)
• Twelfth Army (United Kingdom)
• Twelfth Army (Italy)
• Twelfth Army Group (United States), a World War II army group solely consisting of U.S. field armies and was the largest U.S. field force under the command of a single individual

Thirteenth Army

• Thirteenth Army (Japan)
• Japanese Thirteenth Area Army
• 13th Army (Russian Empire)

Fourteenth Army

• 14th Army (German Empire), a World War I field army
• 14th Army (Wehrmacht), a World War II field army
• Japanese Fourteenth Area Army
• 14th Army (Soviet Union)
• 14th Guards Army (Soviet Union)
• Fourteenth Army (United Kingdom)
• Fourteenth United States Army, a World War II 'phantom' force

Fifteenth Army

• 15th Army (Wehrmacht), a formation of the German Army during World War II
• Fifteenth Army (Japan), a formation of the Imperial Japanese Army during World War II
• Japanese Fifteenth Area Army, a formation of the Imperial Japanese Army during World War II
• 15th Army Group, a combined formation of the United Kingdom and United States armies during World War II
• Fifteenth United States Army, a formation of the United States Army during World War II

Sixteenth Army

• 16th Army (Wehrmacht), a unit of the German Army in World War II
• 11th Guards Army (16th Army, Soviet Union), a unit of the Soviet Army from World War II through the Cold War
• Western Army (Russia) (16th Soviet Army), a unit of the Soviet Army during World War I
• 16th Army (People's Republic of China), a unit of People's Republic of China which still active right now.

Seventeenth Army

• 17th Army (German Empire), a World War I field Army
• 17th Army (Wehrmacht), a World War II field army
• Seventeenth Army (Japan)
• Japanese Seventeenth Area Army during World War II (see List of Armies of the Japanese Army)
• 17th Army (Soviet Union)

Eighteenth Army

• 18th Army (German Empire), a World War I field Army
• 18th Army (Wehrmacht), a World War II field army
• 18th Army (Soviet Union)
• Eighteenth Army (Japan)

Nineteenth Army

• 19th Army (German Empire), a World War I field Army
• 19th Army (Wehrmacht), a World War II field army
• Nineteenth Army (Japan)
• 19th Army (Soviet Union)

Twentieth Army

• Twentieth Army (Japan)
• 20th Group Army - People's Liberation Army
• 20th Guards Army - Soviet Union and Russia
• 20th Army (Soviet Union)
• 20th Mountain Army (Wehrmacht)

Twenty first Army

• 21st Army (Wehrmacht)
• 21st Army Group - a World War II British army group, consisting mainly of British and Commonwealth troops

See also

• Lists of armies
• List of countries by number of military and paramilitary personnel