 His third experience was in 1942 during the worst fighting of World War II, when Ueshiba had a vision of the "Great Spirit of Peace".After these events, Ueshiba seemed to slowly grow away from Takeda, and he began to change his art.These changes are reflected in the differing names with which he referred to his system, first as "aiki-jūjutsu", then Ueshiba-ryū, Asahi-ryū, and "aiki budō".