List of numbered armies

First Army

• First Allied Airborne Army
• First Army
• First Army
• First Army
• First Canadian Army
• New 1st Army
• 1st Army
• First Army
• 1st Army, a World War I field army
• 1st Army, a World War II field army
• 1st Panzer Army
• 1st Parachute Army
• First Army
• First Army
• First Army
• First Area Army
• First Army
• First Polish Army
• First Polish Army
• 1st Army
• First Army
• 1st Army
• First Army
• 1st Red Banner Army
• First Army
• First Army
• First United States Army
• 1st Army
• 1st Army

  Second Army

• Second Army
• Second Army
• Second Army
• Second Army
• Second Army
• 2nd Army, a World War I field army
• 2nd Army, a World War II field army
• 2nd Panzer Army
• Second Army
• Second Army
• Second Army
• Second Army
• Second Army
• 2nd Army
• Second Army
• 2nd Red Banner Army
• Second Army
• Second United States Army
• Second Army
• 2nd Army
• 2nd Army

  Third Army

• 3rd Army
• Third Army
• Third Army
• Third Army
• 3rd Army, a World War I field army
• 3rd Army, a World War II field army
• 3rd Panzer Army
• 3rd Army
• Third Army
• Third Army
• Third Army
• Third Army
• 3rd Army
• 3rd Army
• 3rd Guards Army
• 3rd Guards Tank Army
• 3rd Shock Army
• 3rd Air Army
• 3rd Army
• Third Army
• Third Army
• Third United States Army
• 3rd Army
• 3rd Army

  Fourth Army

• 4th Army
• Fourth Army
• Fourth Army
• New Fourth Army
• Fourth Army
• 4th Army, a World War I field army
• 4th Army, a World War II field army
• 4th Panzer Army
• Fourth Army
• Fourth Army
• Fourth Army
• 4th Army
• 4th Army
• 4th Air Army
• 4th Guards Army
• 20th Guards Army
• Fourth Army
• Fourth United States Army
• 4th Army
• 4th Army

  Fifth Army

• Fifth Army
• Fifth Army
• Fifth Army
• 5th Army, a World War I field army
• 5th Army, a World War II field army
• 5th Panzer Army
• Fifth Army
• Fifth Army
• Fifth Army
• 5th Army
• 5th Army
• Fifth Army
• Fifth United States Army, another name for United States Army North
• 5th Army

  Sixth Army

• Sixth Army
• Sixth Army
• 6th Army, a World War I field army
• 6th Army, a World War II field army
• 6th Panzer Army
• Sixth Army
• Sixth Army
• Sixth Army
• 6th Army
• 6th Army
• Sixth United States Army
• Sixth United States Army Group - one of only two United States army groups ever activated.
• 6th Army

  Seventh Army

• 7th Army
• Seventh Army
• 7th Army, a World War I field army
• 7th Army, a World War II field army
• Seventh Army
• Seventh Army
• 7th Army
• 7th Army
• Seventh United States Army, another name for United States Army Europe
• 7th Army

  Eighth Army

• Eighth Route Army, a Chinese Communist force that fought against the Japanese during World War II
• Eighth Army
• 8th Army, a World War I field army
• 8th Army, a World War II field army
• Japanese Eighth Area Army
• Ottoman Eighth Army
• Eighth Army, during World War II another name for the Italian Army in Russia
• Eighth Army
• Eighth United States Army
• 8th Army
• 8th Army
• 8th Guards Army

  Ninth Army

• Ninth Army, a field army during World War I and World War II
• 9th Army, a World War I field army
• 9th Army, a World War II field army
• Ninth Army, a World War I field army
• Ninth Army
• 9th Army, a World War I field army
• 9th Army, a field army active from 1939–43 and then after the war from 1966-1989
• Ninth Army, a British Army formation during World War II
• Ninth United States Army, used in Northwest Europe in 1944 and 1945

  Tenth Army

• 10th Army
• Tenth Army
• 10th Army, a World War I field army
• 10th Army, a World War II field army
• Tenth Army
• Tenth Army
• 10th Army
• 10th Army
• Tenth Army
• 10th Guards Army
• Tenth United States Army

  Eleventh Army

• 11th Army, a World War I field army
• 11th Army, a World War II field army
• 11th SS Panzer Army
• Eleventh Army
• Eleventh Army
• 11th Air Army
• 11th Army
• 11th Army
• 11th Army Group

  Twelfth Army

• 12th Army, a World War I field army
• 12th Army, a World War II field army
• Twelfth Army
• 12th Army
• 12th Army
• Twelfth Army
• Twelfth Army
• Twelfth Army Group, 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
• Japanese Thirteenth Area Army
• 13th Army

  Fourteenth Army

• 14th Army, a World War I field army
• 14th Army, a World War II field army
• Japanese Fourteenth Area Army
• 14th Army
• 14th Guards Army
• Fourteenth Army
• Fourteenth United States Army, a World War II 'phantom' force

  Fifteenth Army

• 15th Army, a formation of the German Army during World War II
• Fifteenth Army, 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, a unit of the German Army in World War II
• 11th Guards Army, a unit of the Soviet Army from World War II through the Cold War
• Western Army , a unit of the Soviet Army during World War I
• 16th Army, a unit of People's Republic of China which still active right now.

  Seventeenth Army

• 17th Army, a World War I field Army
• 17th Army, a World War II field army
• Seventeenth Army
• Japanese Seventeenth Area Army during World War II
• 17th Army

  Eighteenth Army

• 18th Army, a World War I field Army
• 18th Army, a World War II field army
• 18th Army
• Eighteenth Army

  Nineteenth Army

• 19th Army, a World War I field Army
• 19th Army, a World War II field army
• Nineteenth Army
• 19th Army

  Twentieth Army

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

  Twenty first Army

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