I've got enough information to lay out the whole story except for the south, where some important events took place but late and militarily not as intense. It's exciting with stormy weather and two climaxes, late at night on the 31st of March and early in the afternoon on the 1st of April; there were 3-4 battles that almost took place and would've been bloody. It'd make an excellent movie.
One of those is well covered in the literature but is only mentioned very indirectly in the main literature -I did not realize it would've been a battle- as it was almost ignored even as it took place. To sum it up, at night on the 31st a heavily armed legalist battalion from Brasília invaded Minas Gerais, the 10th police battalion was sent against it and covered an immense stretch of road in amazing speed, and as its commander realized he couldn't win in a fair fight he told the citizens of the city in the middle of the way, Paracatu, that he'd entrench there and there'd be a bloodbath. They were intimidated and begged the legalists not to attack, which they never did.
My orders of battle are detailed enough I've even found a Maintenance Company. For the legalists they are vaguer. I've also got a good grasp of what took place in Rio de Janeiro proper, it had a lot of gimmicks like dumping oil on hills to prevent artillery from going up or peeking on a garrison by sending a truck full of human remains with the claim of retrieving a corpse, but ultimately there were no meaningful attacks even though the legalists could've tried.
I've found the entire Oral History of the Army for sale and it weighs 10 kilograms and costs R$ 500, no way I can swallow all of that. I have, however, ordered volumes 3 and 14 for R$ 70. I'm full of juvenile excitement - in a few weeks I'll find minutiae on some critical moments and clarify some contradictions in my sources.