Just noticed a misplaced position.

The Academy is the large slashed red area in the west and its units are in green. A motorized cavalry squadron of 70-80 men would fight a delaying action, including obstructing the road with heavy vehicles from a construction company. An engineer platoon would detonate two highway bridges, I've positively identified one of them, it's this. A reinforced infantry company of 250 men would hold out, backed by an artillery battery. A guard company from the Command and Service Battalion protected fuel stocks through the road. Médici relied on the psychological barrier of holding out with "kids", his cadets. I have their exact locations in km of the highway and reference points, though as my maps don't show where each km is the marked location is approximate. All the other forces are less exact.

In red are the IInd Army's forces. Some of its reserve force in São Paulo would later be dispatched to the south.

In blue is the School-Unit group, the battalion at the vanguard had 800 men. At 13:00 it was at the entrance of Barra Mansa, the last city before Resende.

In yellow is the 1st Armored Infantry Battalion. It shows up right in the middle of the road if you look at the formal hierarchy, but sources are completely silent on it. Only the Oral History, volume I (available online) clarifies that it allied with Médici, was with a very reduced structure and stayed in Volta Redonda. Why didn't it bolster the cadets along the highway? I can only speculate, as there's very little information in the only source. I've looked at the battalion's logs, available online, and they just mention that it entered readiness on the 31st with no information on the 1st.

Like elsewhere the rebels won a "moral" victory over the legalist military, a mortar platoon refused to fire and those two extra artillery batteries didn't mount to fire but instead, upon arrival at 14:00, raced at maximum speed and defected. Elsewhere at the same time Muricy's column was about to enter battle. In both cases there was not a single shot as the Ist Army's commander, Âncora, decided to visit the academy and negotiate with Kruel. This was after Goulart's had set flight from Rio de Janeiro to Brasília and the legalist hierarchy and position in the city began to melt, and at the suggestion of both Goulart and Costa e Silva, one of the two rebel masterminds. At 15:00 a truce was declared. Âncora arrived a devastated man, being received by Médici with full military honors despite calling himself defeated; Médici replied that only the fatherland's enemies were defeated. Then Âncora surrendered the Ist Army.