Basmo fortress (Basmo festning) is a former fortification located in the north-western part of Marker municipality in Østfold county, Norway. The fortress was placed on the main road from Ørje. The site is situated near the Swedish border on an isolated mountain outcropping between lakes Rødenessjøen and Hemnessjøen.[1]
On the night of March 9, 1716, the pyres on the mountaintops announced that Swedish King Charles XII had crossed the border with 1,000 men. Moving rapidly, he found the border poorly guarded and moved with cavalry to Høland parsonage. Norwegian troops stationed in the district were assembled by the Basmo commander, Colonel Kruse, who attacked the Swedes in a bloody battle. Charles XII barely escaped capture, but the tide was soon turned against the outnumbered Norwegians, and Kruse, badly wounded, was captured. The Swedes went on to occupy Christiania (now Oslo) without resistance on March 21, 1716, but were ultimately repulsed. Basmo was also in the path of invading Swedish troops during Charles XII's second unsuccessful invasion in 1718.[3]
Basmo was shut down and de-commissioned during 1744–45. Today there is a ruin with barely visible defense works and the stone base of the former tower. In 1987, work was started on restoration of the site.[4]
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