 On the local political level, Jens Landmark was mayor of Kongsberg in 1851 (Sjur Aasmundsen Sexe was mayor from January to March), 1853, 1856 and 1864, and deputy mayor in 1855 and 1861.In addition, he was still enrolled with the military, and was promoted to lieutenant colonel on 30 January 1864.In addition, he was proclaimed Knight of the Order of St. Olav in 1860, as well as Knight of the Swedish Order of the Sword.