Battles on 11 May

12 battles fought (or begun) on 11 May, from 1689 to 1957, 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 11 May?

The best-known battles on this day (by number of Wikipedia language editions) are Battles of Khalkhin Gol (1939), Battle of Fontenoy (1745), Battle of Attu (1943).

• Battle of Bantry Bay 11 May 1689Ireland · Nine Years' War
• Battle of Fontenoy 11 May 1745Belgium · War of the Austrian Succession
• Siege of Louisbourg (1745) 11 May 1745 – 28 June 1745Canada · War of the Austrian Succession
• Battle of Huta Krzeszowska 11 May 1863Poland · January Uprising
• Battle of Yellow Tavern 11 May 1864United States · American Civil War
• Battle of Cienfuegos 11 May 1898Cuba · Spanish–American War
• Battles of Khalkhin Gol 11 May 1939 – 16 September 1939Mongolia · Soviet–Japanese border conflicts
• Battle of the Grebbeberg 11 May 1940 – 13 May 1940Netherlands · German invasion of the Netherlands
• Battle of Attu 11 May 1943 – 30 May 1943United States · World War II
• Battle of Slivice 11 May 1945 – 12 May 1945Czechia · World War II
• Battle of Dongshan Island 11 May 1950China · Chinese Civil War
• Oued Zeggar ambush 11 May 1957Algeria