 As part of the arming of Norway and the Glomma Line in the years up to 1905, a battery was installed in Fetsund for four Ehrhardt 7.5 cm and four Cockerill-Nordenfeldt Model 1904 10.5 cm field cannons from the Norwegian Field Artillery ().The installation was started in December 1898 and was completed in April 1900.It is located on the Vilberg farm on a hill west of Fetsund Station.