In 1921, in an event known as the , the Japanese authorities raided the compound, destroying the main buildings on the site and arresting Deguchi on charges of lèse-majesté. Ueshiba's dojo was undamaged and over the following two years he worked closely with Deguchi to reconstruct the group's centre, becoming heavily involved in farming work and serving as the group's "Caretaker of Forms", a role which placed him in charge of overseeing Ōmoto's move towards self-sufficiency. His son Kisshomaru was born in the summer of 1921.