Chris Harrod and I played the Gavilan scenario for Liberators QPR. I was the defending Patriots and Chris the Royalists. It was great fun but another epic in terms of play time. The Patriots won. We’re not sure the Royalists can win even with beefing up Morgado’s forces.
Setting: Gavilan Hill, Conception, Chile; 5 May 1817
Table
We used all of Chris’s 8′ x 5′ 6″ table. The ground scale was 1″ = 15 yards and the troop scale was adjusted to compensate. I made specific lake and river features for the game along with a Gavilan Hill.
The scenario constrains the deployment quite tightly, particularly for the Royalists. The photos shows the table at deployment, with the Patriots to right and the entry points of two Royalist columns on the left. The white crosses just show the grid for setting up the terrain.

As the Patriot defender I deployed on Gavilan Hill but with my cavalry massed on the right and infantry on the left.

The artillery was grouped in the centre behind the little lake. This was to maximise their fire zone.

Battle
0700 hours
The battle started at 0700 hours as the Royalist Column Ordonez entered the table. The Patriot grand battle singled out the Grenadiers of the Conception battalion for a massed blast … and routed them.

0715 hours
Despite his losses Ordonez pushed ahead. His plan was to rush his cavalry up between the swamp and the bank of the Bio Bio river. The infantry would follow as best they could and mounted an attack through the swamps. The artillery would stay behind to threaten the distant Patriots.

Chris scored well for the arrival of Morgado’s column which duly arrived on the far flank.

I definitely would have appreciated some more time to deal with Ordonez before the Royalist reinforcements arrived. Now I knew I’d have to fight a battle on two fronts.

0730 hours
The Royalists had to advance under heavy fire from the Patriot artillery. On the plus side for Chris Chillan was already half way along the edge of the swamp.

But their rapid advance meant the Royalist Chillan Dragoons would now become the focus of the Patriot artillery.

0745 hours
Royalists advance to both left and right and the Patriots respond With the Royalist columns now both half way across the table I cracked and moved my troops to counter their advance. Chris had won the psychological battle of wills and in hindsight at least some of this movement was unnecessary. Most significantly I pushed my cavalry off the hill and split my artillery into two groups.

The Royalist Chillan Dragoons raced on but were still being enfiladed by the Patriot artillery. I wasn’t doing massive damage but we’d see what the final toll would be when the Chillan got within charge distance.

On the other flank Morgado tried to lure the Patriots off the hill and started a cat and mouse game. As the Royalist infantry and artillery entered the marsh around the lake the cavalry began to advance then retreat on each side. Chris knew his cavalry were outclassed so wanted to draw my cavalry into range of his guns before the fateful encounter.

0800 hours
Ordonez finally got his Chillan dragoons past the marsh near the Bio Bio river. And on the far flank I committed my Argentine Horse Grenadiers in the centre. Now we’d see if the Royalist artillery could whittle them down before they got hold of some enemy cavalry.

Third turn in a row in which one of the squadrons from the Chillan Dragoons takes a hit from the Patriot artillery.

0815 hours
Second Royalist unit routs.

As the Royalist Chillan Dragoons lined up to charge Gavilan Hill the Patriot artillery broke one of the Royalist squadrons.

0830 hours
As the Argentine Horse Grenadiers faffed about in the centre of the table the Royalist Chillan Dragoons began their charge.

Two squadrons of the Chillan Dragoons charged the Patriot line. But they are were charging steady infantry and guns. And were vastly outnumbered. These guys are not French Cuirassiers and not surprisingly they cracked under the withering fire of the Patriots.

0845 hours
With the demise of the Royalist Chillan Dragoons Ordonez called off his infantry attack as well and pulled his fusiliers back towards the marsh. On the other flank the Argentine Horse Grenadiers finally thought they had a chance at charging some Royalist Cavalry; unfortunately both squadrons had been taking hits from the Royalist artillery in front and behind.

0900 hours
Now it was Column Morgado’s turn. The Argentine Horse Grenadiers charged as Morgado’s ad hoc infantry

The elite Argentine Horse Grenadiers sliced cleanly through the Royalist Frontier Dragoons and pursued them off the table.

Back on Gavilan Hill the Argentine 11th and supporting artillery watched as Morgado’s ad hoc infantry battalion advanced towards them. Once in range the Royalist infantry quickly routed the opposing artillery. But they still had the 11th to face and they had the victorious Argentine Horse Grenadiers behind them. Didn’t look good.

With the cavalry from both Column Ordonez and Column Morgado routed ,Chris conceded the game.