The battle of Concon took place Aug. 21, 1891. Nine thousand
Congressional troops advancing toward Valparaiso from Quinteros Bay,
where they had landed the day previous, were met by Balmaceda's troops
on the other side of the river Aconcagua. The Esmeralda and the
Magellanes, co-operating from the sea, made fearful havoc among the
Balmacedists with their machine guns and shell. After a stubborn fight
the Balmacedists were totally defeated, and were pursued by the
victorious cavalry, losing 4,000 out of 12,000 in killed, wounded and
deserters. All their field pieces were captured, and thus the road was
left open for the Congressionalists to advance on Viña del Mar.