SCHOOL-UNIT GROUP, Vila Militar
Those were fully staffed and had the best American equipment available. They served as models for the rest to follow. Commander was Anfrísio, a reliable legalist.
Infantry School Regiment, Vila Militar (x2 battalions)
Cavalry School Regiment, Vila Militar
-Refused to join the rebels
Artillery School Regiment, Vila Militar (x1 group)
-Several batteries defected
Engineering School Battalion, Vila Militar
1st 90 mm AA Gun Group, Vila Militar
-One of the batteries was under Ustra, who'd later torture Dilma Rousseff and write one of my sources, "The Suffocated Truth:The story the left doesn't want you to know". Guess which side he took.
Maintenance School Battalion, Vila Militar
AEROTERRESTRIAL DIVISION CORE, Vila Militar
Aeroterrestrial Infantry Regiment (battalion-sized)
Aeroterrestrial Howitzers Group

There are several formations absent from my source in >>36415. Those are the 1st "Dragoons of Independence" Guard Cavalry Regiment, which refused to join the rebels, two very reliable commands, Army Police and the Presidential Guard Battalion, and the Agulhas Negras Academy. In addition the Navy had two marine battalions, Humaitá and Riachuelo, with both their men and their commander, Aragão, the "People's Admiral", being very legalist. They were neutralized by rebel activity higher up in the Navy's chain of command. The Air Force had the powerful Santa Cruz Airbase under a communist sympathizer.