21 August - 8 October 1573. Failed siege of Alkmaar by Don Frederick of Toledo. 21st August. The construction of trenches, the erection of the bulwarks and the landing of the guns was not until 18 September when the breach started shooting and the first rush took place.

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21 August - 8 October 1573. Failed siege of Alkmaar by Don Frederick of Toledo. 21st August. The construction of trenches, the erection of the bulwarks and the landing of the guns was not until 18 September when the breach started shooting and the first rush took place.

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