Following the Stockholm Exhibition in 1930 and the advent of Functionalism, Cyrillus Johansson's aesthetic language fell out of favour with the broad architectural community in Sweden. Johansson himself considered the new ideas "a personal affront" and continued to pursue his personal architectural ideals. In the 1940s, as the functionalistic doctrines were softened somewhat and an economic crisis caused by the ongoing World War II prompted a revival for building in cheaper brick, arguably Johanssons favourite material, he experienced something of a comeback and was among other things commissioned with designing buildings for the Military Archives of Sweden and other military offices in Gärdet, Stockholm. He also designed the Fagersta airspace surveillance tower. During the 1950s, he was mainly engaged in church building (e.g., the church in Björneborg) and restoration.