During the summer of 1675, 1800 men were kept at work on the fortresses at Akershus, Fredrikstad, and Fredrikshald.
At the outbreak of the Gyldenløve War in 1675 a large contingent (4000 men) were concentrated at Fredrikshald under General Russenstein.
Born in Fredrikshald, Karlsen was a member of the executive committee of Tune municipal council between 1925 and 1937, and served as mayor from 1937 to 1941 and 1945 to 1971.
Maria Gustava Schjelderup was born in Fredrikshald (now Halden), Østfold, of parents Captain Christian Bernhard Koren Schjelderup (1819–1889) and Anne Sofie Preus Berg (1831–1898).
Krag grew up in various locations where his father, Hans Peter Schnitler Krag (1794–1855), served as pastor, including Vågå, Fredrikshald (Halden) and Christiania (Oslo).
A force of 4,000 Norwegians was concentrated at Fredrikshald under the command of General Russenstein, both protecting against any Swedish attempts to invade and threatening to retake the formerly Norwegian province of Bohuslän.