Formation of a new cabinet, with Generals KOISO Kuniaki and YONAI Mitsumasa shown going to the Imperial Palace From "Kokusai Shashin Joho. Vol.23 No.8"

With the war situation, a group of senior statesmen (Jushin), including OKADA Keisuke, KONOE Fumimaro, and KIDO Koichi, joined forces with the anti-TOJO faction in the Diet to accelerate efforts to topple the TOJO Cabinet. TOJO having failed in his attempt to bring about a ministerial reshuffling, he and all his Cabinet members resigned on 18 July 1944 (Showa 19). Governor-General KOISO Kuniaki of Korea was then given the Imperial sanction to form the next Cabinet.

The KOISO Cabinet, which had as its slogan "min'i chotatsu" (growth/expansion of the people's will), emphasized coordination with the various power centers of the Diet. It restored the system of Diet members allowing political officers to serve as Cabinet staff members, which had been abolished by the 2nd KONOE Cabinet. Consequently, twenty four members of the House of Representatives and House of Peers became parliamentary ministers and councilors.

In his diary, the Imperial Rule Assistance Political Association's ANDO Masazumi (formerly of the Dokokai) sharply criticized the chaos within the Diet that had resulted from the introduction of the "spoils-system" personnel changes.