In June 1935 the North Chahar Incident and the resulting Chin-Doihara Agreement substantially affected events in the Inner Mongolian province of Chahar.
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The most important provisions of the Chin-Doihara Agreement forced all units of the Chinese 29th Army to be withdrawn from the eastern districts of Chahar province and north of Changpei, including the 132nd Division in Changpei.
From 1937 to 1945, it was occupied by Japan and made a part of Mengjiang, a Japanese-controlled region led by Mongol Prince Demchugdongrub of the Shilingol Alliance.