on this day, 16 engagements
Battles fought on 20 December
16 engagements in the atlas were fought on 20 December between 1305 and 1944: 11 battles and 5 sieges. Among them: First Battle of Champagne (1914), Siege of Bastogne (1944).
Engagements by date
| Date | Engagement | Place | War |
|---|---|---|---|
| 20 December 1305 | Battle of Amroha | Amroha | Mongol invasions of India |
| 20 December 1359 | Siege of Rheims | Reims | Hundred Years' War |
| 20 December 1644 | Siege of Dansborg | Fort Dansborg | |
| 20 December 1712 | Battle of Gadebusch | Gadebusch | Great Northern War |
| 20 December 1782 | Battle of the Delaware Capes | Delaware Bay, New Jersey | American Revolutionary War |
| 20 December 1808 | Second Siege of Zaragoza | Zaragoza | Peninsular War |
| 20 December 1848 | Siege of Leopoldov Fortress | Leopoldov Fortress | |
| 20 December 1852 | Battle of Berea | Berea District | Eighth Xhosa War |
| 20 December 1861 | Battle of Dranesville | Fairfax County, Virginia | American Civil War |
| 20 December 1864 | Second Battle of Saltville | Saltville, Virginia | American Civil War |
| 20 December 1880 | Action at Bronkhorstspruit | Bronkhorst Spruit | First Boer War |
| 20 December 1912 | Capture of Korytsa | Korçë | First Balkan War |
| 20 December 1914 | First Battle of Champagne | Champagne-Ardenne | World War I |
| 20 December 1917 | Battle of Jaffa | Yarkon River | World War I |
| 20 December 1943 | Battle of Ortona | Ortona | World War II |
| 20 December 1944 | Siege of Bastogne | Bastogne | World War II |
Only engagements recorded to the day are listed. Dates before 1582 are Julian, as recorded.