Of the 81 companies in the new triangular division, 51 fitted more easily into 74-man barracks.

It has the distinction of being the first triangular division Japan formed.

Later like most square divisions in the late 1930s and early 1940s, it was reorganized as a triangular division:

The 37th Division was organized as a triangular division.

In 1941 it was reorganized as a triangular division.

During the Zhejiang-Jiangxi campaign it was converted into a triangular division.

The 107th Infantry Division was formed as a triangular division.

It later received a third regiment, becoming a regular triangular division.

With the 41st Division being reconfigured to the new triangular division, the 161st was considered excess.

A triangular division is a designation given to the way divisions are organized.