Battle of San Lorenzo River

Battle of San Lorenzo River
Part of the Paraguayan War
DateApril 28, 1865
Location
San Lorenzo River, Argentina
Result Paraguayan victory
Belligerents
 Paraguay  Argentina
Commanders and leaders
José de Jesús Matínez Unknown
Strength
50 horsemen 400 horsemen
Casualties and losses
4 killed 200 killed and wounded

The battle of the San Lorenzo River was the first engagement between Paraguayan and Argentine forces in the Paraguayan War. The combat took place near the San Lorenzo River, in Argentina, on April 28, 1865 during the Corrientes Campaign and ended with the victory of the Paraguayans.