Neon Vasilyevich Antonov (1907–1948) was transferred to command the flotilla in preparation for the war against Japan. During the operation, the AMF (eight monitors, eleven gunboats, 52 armored launches etc.) under the command of Antonov cooperated with the armies of the 1st and the 2nd Far Eastern fronts on the Amur, Ussuri, Sungari, rivers and Lake Khanka.