 In 1941, the detachment in Stockholm was separated and formed an independent regiment under the name Stockholm Anti-Aircraft Regiment ("Stockholms luftvärnsregemente", A 11).Between 1940 and 1942, the regiment organized preparedness divisions for the air defense of Sundsvall and Malmö.In 1941, these two preparedness divisions were reorganized into Sundsvall Anti-Aircraft Division ("Sundsvalls luftvärnsdivision", A 10 Su) and Malmö Anti-Aircraft Division ("Sundsvalls luftvärnsdivision", A 10 M).