Themilitary ranks of the Empire of Brazil were arank system used by theArmed Forces of the Empire of Brazil.

The rank insignia of theEstado-Maior General (General/Flag officers) were established by an Imperial Decree of 7 October 1823. They bore the leaves of anOak-tree, similar to the ranks of thePortuguese Army of the early 1800s. The ranks for the Senior and Junior Officers were the same throughoutPedro II's reign.[1]
In 1850, a law regulating the Promotion of officers in the Imperial Brazilian Army was approved. According to this legislation, to become an officer, one must have spent at least two years as apraça, and be at least 18 years old. This meant that to become anAlferes, equivalent to a 2ºLieutenant, one had to be either aSergeant or aCadet with service time at lower rankings, not to mention the students from theEscola Militar whose entrance to officership was handled by a separate legislation. To move up the rankings toCaptain, the officer must have spent two years serving as aTenente and two years as anAlferes. Promotion off Captain, after three years serving as one, would be as such: half of the officers promoted fromMajor toCoronel would be due to their service time, and the other for their accomplishments. On the other hand, promotion to the General Officers would only be granted for the accomplishments of the officer.[2]
For the Praças however, to achieve promotion was based on whether the praça had volunteered or had been conscripted. José Iran Ribeiro, from theFederal University of Santa Maria, found out that, from a group of 15 volunteers, 9 had risen up to become sergeants 6 of them before reaching 20 years of age. For 16 conscripts, promotion to sergeant was achieved by 5 of them, 3 of them after their 25th birthday.[3]
| Rank group | General / flag officers | Senior officers | Junior officers | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Epaulettes | ||||||||||||||||||||||||
| Sleeve rank insignia | ||||||||||||||||||||||||
| Name[4][5][6] | Marechal de Exército | Tenente-general | Marechal de campo | Brigadeiro | Coronel | Tenente-coronel | Major | Capitão | Tenente | Alferes | Alferes-aluno | |||||||||||||

| Rank group | Senior NCOs | Junior NCOs | Enlisted | |||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sleeve rank insignia[4][7] | ||||||||||||||||||||||||||||||||||||
| Primeiro-sargento | Segundo-sargento | Furriel | Cabo | Anspeçada | Soldado | |||||||||||||||||||||||||||||||
| Rank group | General / flag officers | Senior officers | Junior officers | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Collar Rank insignia | ||||||||||||||||||||||||
| Name[8][9] | Comandante Superior | Coronel Chefe de Legião | Tenente-coronel | Sargento-Major | Capitão | Tenente | Alferes | |||||||||||||||||
| Rank group | Senior NCOs | Junior NCOs | Enlisted | |||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Collar Rank insignia | ||||||||||||||||||||||||||||||||||||
| Sleeve rank insignia | ||||||||||||||||||||||||||||||||||||
| Names[8] | Primeiro-sargento | Segundo-sargento | Furriel | Cabo | ||||||||||||||||||||||||||||||||