| | 1862 | Battle of Mechanicsville. Federals repulse poorly planned Confederate attack. First important action of the Seven Days' Battle. |
| | 1876 | Battle of the Little Bighorn. Custer's Last Stand. |
| | 1877 | Battle of Simnitza. After a night crossing of the Danube, Russians beat off garrison of Skobelev. |
| | 1942 | Battle of Mersa Matruh opens. Rommel with only 60 tanks and 2,500 German infantry routed four British divisions capturing 6,000 prisoners and 40 tanks. |
| | 1945 | UN Charter written in San Francisco. |