 With Sollefteå being located at the lowest rapids of the Ångermanälven thereby making it the last outpost to which it was possible to sail- The village developed into a municipality.The town changed from a commercial town into a town dominated by the military when the two regiments T 3 (Logistics) and I 21 (Infantry) were located there in 1898 and 1911 respectively.In 1902 Sollefteå obtained the status of market town or "köping" before finally being granted a town charter in 1917 thereby making it a city.