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Blaker Fortress is one of the Norwegian fortresses which were constructed in the period of intense competition among the Baltic powers (Denmark-Norway, Sweden, Russia, Poland and the German states) for northern supremacy. The 17th and beginning of the 18th century was a period of virtually continuous war or preparation for war, as follows: * 1611 to 1613 - Kalmar War * 1618 to 1648 - Thirty Years' War * 1655 to 1658 – Northern Wars * 1673 to 1675 – Fortification Upgrades * 1675 to 1679 – Gyldenløve War * 1700 to 1721 – Great Northern War In 1675 Gyldenløve indicated an intent to construct a fortress in the Glomma river where Blaker (a former township in Akershus) lies as part of his general program of Norwegian fortification upgrades. His objective was a stronghold available both to serve as a safe defensive position when necessary and a location to station troops who could take the offensive against invaders when the opportunity availed itself. Blaker Fortress saw action in 1718, when it was surrounded by the invading Swedish army, but the siege collapsed upon the death of Charles XII of Sweden in front of Fredriksten Fortress. ==References== *''Norges festninger'' by Guthorm Kavli; Universitetsforlaget; 1987; ISBN 82-00-18430-7 ==External links== *(Blaker Fortress ) *(Akershus county museum ) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Blaker Fortress」の詳細全文を読む スポンサード リンク
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