on this day, 45 engagements
Battles fought on 1 September
45 engagements in the atlas were fought on 1 September between AD 632 and 1939: 33 battles, 10 sieges and 2 naval actions. Among them: Battle of Sedan (1870), Battle of Westerplatte (1939), Defense of the Polish Post Office in Danzig (1939), Tumu Crisis (1449).
Engagements by date
| Date | Engagement | Place | War |
|---|---|---|---|
| 1 September AD 632 | Battle of Buzakha | Ha'il | Ridda Wars |
| 1 September 1015 | Battle of Dadosesani Land | ||
| 1 September 1054 | Battle of Atapuerca | Atapuerca | |
| 1 September 1308 | Siege of Ragnhildsholm | Ragnhildsholmen | |
| 1 September 1435 | Battle of Wilkomierz | Ukmergė | Lithuanian Civil War of 1432–1438 |
| 1 September 1449 | Tumu Crisis | Huailai County | |
| 1 September 1600 | Siege of Shiroishi | Shiroishi Castle | |
| 1 September 1632 | Battle of Castelnaudary | Castelnaudary | |
| 1 September 1639 | Siege of Salses | Salses-le-Château | Thirty Years' War |
| 1 September 1644 | Battle of Tippermuir | Perth | Wars of the Three Kingdoms |
| 1 September 1647 | Siege of Jihlava | Jihlava | |
| 1 September 1701 | Battle of Chiari | Chiari | War of the Spanish Succession |
| 1 September 1707 | Siege of Port Royal | Port-Royal | Queen Anne's War |
| 1 September 1777 | Siege of Fort Henry | Wheeling, West Virginia | American Revolutionary War |
| 1 September 1803 | Siege of Aligarh | Aligarh | Second Anglo-Maratha War |
| 1 September 1808 | Battle of Ruona | Kuortane | Finnish War |
| 1 September 1813 | Siege of Glogau | Głogów | |
| 1 September 1835 | San Felipe Incident | Texas | Texas Revolution |
| 1 September 1854 | Siege of Petropavlovsk | Petropavlovsk-Kamchatsky | Crimean War |
| 1 September 1858 | Siege of Tourane | Da Nang | Q10747195 |
| 1 September 1858 | Battle of Four Lakes | Washington | Coeur d'Alene War |
| 1 September 1862 | Battle of Chantilly | Fairfax County, Virginia | American Civil War |
| 1 September 1862 | Battle of Britton's Lane | Madison County, Tennessee | American Civil War |
| 1 September 1863 | Battle of Devil's Backbone | Sebastian County, Arkansas | Trans-Mississippi theater of the American Civil War |
| 1 September 1870 | Battle of Sedan | arrondissement of Sedan | Franco-Prussian War |
| 1 September 1877 | Battle of Lovcha | Lovech | Tenth Russo-Turkish War |
| 1 September 1880 | Battle of Kandahar | Kandahar | Second Anglo-Afghan War |
| 1 September 1881 | Battle of Fort Apache | Fort Apache Indian Reservation, Arizona | Apache Wars |
| 1 September 1893 | Battle of Ingalls | Ingalls, Oklahoma | |
| 1 September 1904 | Battle of Masoller | Masoller | Uruguayan revolution of 1904 |
| 1 September 1914 | Action at Néry | Néry | World War I |
| 1 September 1917 | Battle of Riga | WWI Eastern Front | |
| 1 September 1917 | Battle of Jugla | WWI Eastern Front | |
| 1 September 1937 | Battle of Taiyuan | Taiyuan | Second Sino-Japanese War |
| 1 September 1939 | Battle of Westerplatte | Westerplatte | 1939 Invasion of Poland |
| 1 September 1939 | Defense of the Polish Post Office in Danzig | Polish Post Office in the Free City of Danzig | 1939 Invasion of Poland |
| 1 September 1939 | Battle of Mława | Uniszki Zawadzkie | 1939 Invasion of Poland |
| 1 September 1939 | Charge at Krojanty | Krojanty | 1939 Invasion of Poland |
| 1 September 1939 | Defense of the Coast of Poland in the September Campaign | Pomeranian Voivodeship | 1939 Invasion of Poland |
| 1 September 1939 | Battle of Mokra | Mokra, Gmina Miedźno | 1939 Invasion of Poland |
| 1 September 1939 | Battle of Chojnice | Chojnice | 1939 Invasion of Poland |
| 1 September 1939 | Battle of Węgierska Górka | Węgierska Górka | 1939 Invasion of Poland |
| 1 September 1939 | Battle of Grudziądz | Grudziądz | 1939 Invasion of Poland |
| 1 September 1939 | Battle of Jordanów | Jordanów | 1939 Invasion of Poland |
| 1 September 1939 | Battle of Częstochowa | Częstochowa | 1939 Invasion of Poland |
Only engagements recorded to the day are listed. Dates before 1582 are Julian, as recorded.