Battle of Campo Grande

The encirclement

The battle of Gondra had forced the Bolivian high command to remove troops from the front of the 9th Division that defended Alihuatá, leaving the advanced area of the stronghold with only three scattered units. 700 men of the "Chacaltaya" regiment remained entrenched near Arce, riding the road coming from Alihuatá, while the "Ballivián" regiment was deployed five kilometres to the left, in Campo Grande. The Bolivian command deployed a company of the "Junín" regiment in Pozo Favorito, four kilometers from the "Chacaltaya", on the right side of the screen.

The Paraguayan command was aware of the weakness of the Bolivian deployment. Reconnaissance patrols learned of the shortage of personnel and the isolation of the three outposts. They surrounded the Bolivian troops through three simultaneous operations. On 30 August, the Paraguayan artillery pounded the trenches of the "Chacaltaya" regiment, while infantry forces assaulted the flanks. A small Bolivian detachment left Alihuatá to bring relief to the "Chacaltaya" but failed to clear the way.

Another strong detachment, consisting of the regiment 18th, managed to evict the Paraguayans, cleaning up the rearguard of the "Chacaltaya". The Paraguayan command, however, was ready to repeat this diversional maneuver. The Gral. Kundt, who was in the sector Bullo controlling the operation which was at that point, leaving their barracks of Muñoz had left specific instructions that the "Loa" regiment should not be used without his permission. The Lieutenant Cnel. Toro, which was nominally as Chief of operations of the high command, but had no more authority that relay the news received from various fronts, to Kundt Muñoz received a distress message from the 9th Division which said that the "Chacaltaya" was being surrounded again and that the "Ballivián" regiment also was in danger. As Toro was trying to contact Kundt to obtain authorization to deploy the "Loa" regiment, the situation of the "Ballivián" and the "Chacaltaya" was deteriorating.

Break-out attempt

Lieutenant Colonel Toro decided to move on his own "Loa" regiment from Gondra to Campo Grande to support the "Ballivián" regiment. Upon learning of this Kundt scolded his Chief of operations and traveled to Alihuatá to meet himself with the situation. General Kundt and Colonel Banzer, Commander of the 9th Division, assumed that the centre of gravity of the Paraguayan offensive was the attack against the "Chacaltaya" regiment, in the path Alihuatá-Arce. The truth was that the Paraguayan command acted there with very little strength. On the other hand, in Campo Grande, the Paraguyan army deployed an entire Division, the 7th.

The "Loa" regiment tried to prolong the "Ballivián" line to avoid overflow enemy flanks, but the Paraguayan troops extended their deployment including the "Loa", threatening to encircle the two units. A baffled Colonel Banzer went to Campo Grande and issued emergency measures on his return to Alihuatá, not before being uncovered and tracked by Paraguayan patrols which had also closed that pathway. A Paraguayan account states:

We saw a passing truck carrying a blond high official of uncertain age, we assumed that he was a senior officer, but we abstained from ambush them to keep the surprise.

On September 12, 1933, the route Charata-Campo Grande was occupied by the Paraguayans, who consequently cornered the Bolivian regiments "Ballivián" and "Loa". The Paraguayan pressure became more intense on both the North and East. Intending to quickly decide the battle, "Ballivián"'s line was broken by a Paraguayan attack and even kitchen and courier staff had to be sent to close the gap. During the night the pressure enemy remained constant. Colonel Rafael Gonzalez Quint, head of the Ballivián suggested ask for reinforcements but the Colonel José Capriles, Commander of the Loa, who had assumed the leadership of the detachment consisting of these two regiments, was opposed. The reason was that Colonel Banzer, on the last visit to his command, had notified him that the 9th Division no longer had any reserves and that all available men were going to be used to help the "Chacaltaya" regiment that was supposedly defending the road to Arce from where came the main attack of the enemy. Colonel Capriles didn't encouraged them to try an offensive on their own since he knew that a retreat was the most reasonable course of action before the effects of the encirclement made it impossible. In the evening of the second day of siege, were heard loud noises of fighting on the side of Alihuatá: it was the Zambrana company of the "Loa" regiment, who was in another sector and that came in relief of the besieged. After half an hour the noise died down; Captain Julio Zambrana Bayá and many of his colleagues had succumbed in the rescue bid. The "Ayacucho" regiment was taken out of Nanawa for another release attempt. He also achieved success. Colonel Ortiz, head of the Paraguayan Division seventh, had established three lines in this sector, looking towards Alihuatá to stop Bolivian forces of relief that they could come from the Fort, another harassing the besieged and third, in the middle, to come and go in support of one or the other wall.

Desperate Situation

Some aircraft were able to throw bags of coca into the fencing. On September 15, the third day of the siege, a hellishly sun increased the thirst of the Bolivian troops. Four trucks had brought water shortly before the encirclement was completed. The liquid is carefully share out to half a litre per day per person. Thirst prevented the soldiers to eat the pieces of meat that was feed them. Their dry throats simply don't allowed them to swallow the food. According to 2nd Lieutenant Benigno Guzmán:

Day 15. 17 Hours: they bring some water, the supply to the troops caused us several casualties, because all are desperate. They do not want the coca that dropped our aircraft, or the cigarretes… some soldiers don't recognize me, others just cry. 10 Hours: I talk with mayor Cárdenas. The exhausted soldiers only can shout out "water! water! water!" ... and the Paraguayans are offering us water, threatening in addition to cut our throats … at noon, the Paraguayans stormed the pen's sector… they carried out another assault, on the entire front this time … Three men get out from the trench, one of them wounded. Another survivor is a Sergeant, who tells me: "the Paraguayans have entered and caught them all"... the few of us still standing attempted to run away towards the headquarters… I was dragged out of the bushes, and they asked me to surrender…everything was lost by then.|Diary 2nd Lieutenant Benigno Guzmán (Querejazu Calvo, 1981, pág. 227)

Surrender

On the western side a Paraguayan official formally raised the surrender of Bolivian units, giving an hour of term for the response. The Paraguayan pressure was felt everywhere and many soldiers were delivering. After consulting his officers, Colonel Capriles agreed to meet with a parliamentary enemy. The veteran Lieutenant Colonel Eugenio Garay joined the Bolivian command post on behalf of the Commander of the Paraguayan Division, Lieutenant Colonel José A. Ortiz, to enter into the terms of the surrender.

And while the Bolivian aircraft threw cans and Paraguayan soldiers offered some water to the Bolivian troops, the Act of surrender was signed. A total of 509 troops capitulated, among them two Colonels, 11 officers, three surgeons and ten non-commissioned officers.

Five hours earlier, ten kilometres to the right, the shrinking company of the "Junín" regiment, defending Pozo Favorito had also been forced to capitulate.

In the Centre, the "Chacaltaya" regiment broke through a second overrun attempt with the help of two units, the "Campos" regiment, launched the assault three times in a row, and the "Lanza" cavalry regiment, who managed to open a safe path on a flank.

Assessment

This battle, despite the small units engaged in it, is important because it marks a change of strategy for the Paraguayan army. Commander Estigarribia was unable to assess the State that was the operational capacity of the enemy army. It was easy to observe the reactions slow and hesitant of the Bolivian command, returning to the tactic of sending reinforcements in small quantities and where the situation was almost hopeless. It was also observed, in the prisoners captured, tiredness and the growing demoralization that widespread in officers and soldiers Bolivians who distrusted more and more orders received from their senior commanders. The Paraguayan Commander Ortiz, which directly addressed the entire operation, could maintain in secret the main direction of his attack until the last minute, denying the enemy time for regrouping their forces.