Its call sign was the Abundant Division (豊兵団, Toyo Heidan).
The 28th Division of the Kwantung Army was formed on 10 July 1940, in Manchukuo capital - Changchun.
The 28th Division was tasked with the defense of the Manchukuo capital, and the neighboring areas of Harbin and Qiqihar under direct control of Kwantung Army.
In the Battle of Okinawa, the 28th Division main positions were never invaded, but were heavily bombed and subject to coastal bombardment.
As all higher-ranking officers of the 32nd Army were killed, Naumi Toshiro, commander of the 28th Division, signed a surrender document for the 32nd Army after the surrender of Japan.