Battles on 20 August

22 battles fought (or begun) on 20 August, from 1637 to 2011, in date order. Dates are from Wikidata and are shown only for battles from 1600 onwards with a single exact date. Dates recorded in the Julian (Old Style) calendar are listed under their Julian day and marked.

Which battles happened on 20 August?

The best-known battles on this day (by number of Wikipedia language editions) are Battle of Gumbinnen (1914), Hundred Regiments Offensive (1940), Battle of Tripoli (2011) (2011).

• Siege of Venlo (1637) 20 August 1637 – 25 August 1637Netherlands · Eighty Years' War
• Battle of Tarragona (August 1641) 20 August 1641 – 25 August 1641Spain · Reapers' War
• Battle of Ormskirk 20 August 1644England · English Civil War
• Battle of Lens 20 August 1648France · Thirty Years' War
• Holmes's Bonfire 20 August 1666Netherlands · Second Anglo-Dutch War
• Battle of Saragossa 20 August 1710Spain · War of the Spanish Succession in Aragon
• Siege of Landau (1793) 20 August 1793 – 23 December 1793Germany · War of the First Coalition
• Battle of Fallen Timbers 20 August 1794United States · Northwest Indian War
• Battle of Ratan 20 August 1809Sweden · Finnish War
• Battle of Grand Port 20 August 1810 – 27 August 1810Mauritius · Mauritius campaign
• Battle of Churubusco 20 August 1847Mexico · Mexican-American War
• Battle of Fort Ridgely 20 August 1862 – 22 August 1862United States · Dakota War of 1862
• Battle of Lovejoy's Station 20 August 1864United States · American Civil War
• Battle of Camas Creek 20 August 1877United States · Nez Perce War
• Battle of Taghit 20 August 1903Algeria
• Battle of Korsakov 20 August 1904Russia · Russo-Japanese War
• Battle of Gumbinnen 20 August 1914Russia · WWI Eastern Front
• Siege of Namur (1914) 20 August 1914 – 25 August 1914Belgium · Western Front
• Battle of the Gulf of Riga 20 August 1915At sea · World War I
• Hundred Regiments Offensive 20 August 1940 – 5 December 1940China · Second Sino-Japanese War
• Philippeville massacre 20 August 1955Algeria · Algerian War
• Battle of Tripoli (2011) 20 August 2011 – 28 August 2011Libya · Libyan Civil War