Today in Military History: April 17
Events of Military significance on this day:
| 1524 | New York Harbor discovered by Giovanni Verrazano. |
| 1864 | Prussian forces captured the fortress of Düppel during the Scheswig-Holstein-Prussian War. |
| 1941 | Yugoslavian army surrenders to Germans. |
| 1961 | Bay of Pigs, invasion. |
| 1975 | Khmer Rouge enter Phnom Penh driving its two million inhabitants into the countryside. |
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