Reorganization of the Brazilian Army in the Old Republic

The reorganization of the Brazilian Army in the Old Republic divided Brazil's territory into military regions and created divisions, brigades and, in the infantry, regiments to group the numerous military units dispersed throughout the country. The simple command chain then in use in the Army, with little organization above battalions and similar formations, gave way to permanent large echelons, with an organization based on divisions and regiments similar to that adopted in other countries.

Source: Wikipedia — Reorganization of the Brazilian Army in the Old Republic (CC BY-SA 4.0)