Battles on 27 May

28 battles fought (or begun) on 27 May, from 1644 to 2015, 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 27 May?

The best-known battles on this day (by number of Wikipedia language editions) are Second Battle of the Marne (1918), Third Battle of the Aisne (1918), Battle of Winterthur (1799).

• Battle of Shanhai Pass 27 May 1644China · transition from Ming to Qing
• Battle of Finta 27 May 1653Romania · Moldavian campaign of Tymofiy Khmelnytsky
• Battle of Torroella 27 May 1694Spain · Nine Years' War
• Landing at Barcelona (1704) 27 May 1704 – 31 May 1704Spain · War of the Spanish Succession in Catalonia
• Capture of Giurgiu (1771) 27 May 1771 – 29 May 1771Romania · Sixth Russo-Turkish War
• Battle of Lipniszki 27 May 1794Belarus
• Battle of Oulart Hill 27 May 1798Ireland · Irish Rebellion of 1798
• Battle of Winterthur 27 May 1799Switzerland · War of the Second Coalition
• Battle of Escape Creek 27 May 1857China · Second Opium War
• Battle of Shakopee 27 May 1858United States · Dakota-Ojibwe War
• Battle of San Fermo 27 May 1859Italy · Second Italian War of Independence
• Siege of Palermo 27 May 1860 – 30 May 1860Italy · Expedition of the Thousand
• Battle of Hanover Court House 27 May 1862United States · American Civil War
• Battle of Pickett's Mill 27 May 1864United States · American Civil War
• Battle of Festubert 27 May 1915France · World War I
• Second Battle of the Marne 27 May 1918 – 6 August 1918France · Western Front
• Third Battle of the Aisne 27 May 1918 – 6 June 1918France · Western Front
• Battle of 42nd Street 27 May 1941Greece · World War II
• Last battle of Bismarck 27 May 1941At sea · Battle of the Atlantic
• Battle of Biak 27 May 1944 – 17 August 1944Indonesia · World War II
• Battle of Changsha (1944) 27 May 1944 – 8 August 1944China · Battle of Changsha–Hengyang
• Attack on Hrubieszów 27 May 1946Poland · anti-communist resistance in Poland
• Battle of Bondo 27 May 1979Tanzania
• Battle of Vozuća 27 May 1995 – 10 September 1995Bosnia and Herzegovina · War in Bosnia and Herzegovina
• Battle of Vrbanja Bridge 27 May 1995Bosnia and Herzegovina · War in Bosnia and Herzegovina
• Battle of Zinjibar (2011–2012) 27 May 2011 – 12 June 2012Yemen · Al-Qaeda insurgency in Yemen
• Battle of Buni Yadi 27 May 2014Nigeria · Boko Haram insurgency
• Battle of Choua 27 May 2015Chad