1st Division General Argolo:

8th Brigade (da Silveira)

8th Battalion
16th Battalion
10th Volunteer Battalion
46th Volunteer Battalion

10th Brigade (Resin)

13th Battalion
2nd Battalion
22nd Volunteer Battalion
26th Volunteer Battalion
40th Volunteer Battalion

3rd Division General Sampaio:

5th Brigade (Belo)

3rd Battalion
4th Battalion
6th Battalion
4th Volunteer Battalion

7th Brigade (Bittencourt)

1st Battalion
6th Volunteer Battalion
9th Volunteer Battalion
11th Volunteer Battalion

4th Division General de Souza:

11th Brigade (Guimarâes)

10th Battalion
14th Battalion
20th Volunteer Battalion
31st Volunteer Battalion

13th Brigade (Pereira)

12th Battalion
1st Volunteer Battalion
19th Volunteer Battalion
24th Volunteer Battalion

6th Division General Monteiro:

12th Brigade (Kelly)

5th Battalion
7th Battalion
3rd Volunteer Battalion
16th Volunteer Battalion

14th Brigade (dos Reis)

2nd Battalion
14th Volunteer Battalion
21st Volunteer Battalion
30th Volunteer Battalion

18th Brigade (Ladislau e Silva)

38th Volunteer Battalion
41st Volunteer Battalion
51st Volunteer Battalion

2nd Cavalry Division General Barreto:

1st Brigade (Bastos)

2nd Line Cavalry Regiment
3rd Line Cavalry Regiment
1st Corps of National Guards

4th Brigade (Bueno)

2nd Corps of National Guard
5th Corps of National Guard
7th Corps of National Guard

5th Cavalry Division Colonel Pinho

3rd Brigade (Mesquita)

4th Corps of National Guard
6th Corps of National Guard
11th Corps of National Guard

15th Brigade (da Luz)

3rd Corps of National Guard
9th Corps of National Guard
10th Corps of National Guard

Artillery Train General Andrea:

17th Brigade (Gurjao)

1st Mounted Artillery Regiment
1st Foot Artillery Battalion
3rd Foot Artillery Battalion

19th Brigade (Freitas)

Engineer Battalion
7th Volunteer Battalion
42nd Volunteer Battalion

Independent Volunteer Cavalry Brigade, General Neto:

1st. Volunteer Cavalry Corps 2nd. Volunteer Cavalry Corps 3rd. Volunteer Cavalry Corps 4th. Volunteer Cavalry Corps

Courtesy of the Office of the Brazilian Military Attaché, Washington, D.C.

Sources cited : Fragoso, General Tasso : A Guerra da Triplice Alianca contra o Paraguai. OD - Osõrio, No. 156, de 28 de Maio de 1866. Resumo Historico das Organizacoes Militares do Exercito.