Alkmaar (Netherlands War of Independence).
Siege was laid to this place August 21, 1573, by 16,000 Spaniards under Don Frederico de Toledo. It was defended by a garrison of 800 soldiers and 1,300 armed burghers. On September 18, an assault was delivered, which was repulsed, with a loss to the besiegers of 1,000 men, while only 37 of the garrison fell. The opening of the dykes at last rendered the position of the Spaniards most precarious, and on October 8 the siege was raised.