Acosta Ñu (which means "Acosta's Field", "Acosta" being a popular last name) is a vast plain of roughly , ideal for the Brazilian cavalry. The initial charge was led by the Allied 1st Corps infantry, supported by artillery. As the Paraguayans retreated across the Yagari River, the 4th Cavalry Brigade made a right flanking movement.
Acosta Ñu, an expansive plain of approximately in size, is suitable for Brazilian cavalry. The initial charge was led by Allied 1st Corps infantry and artillery support. As Paraguayans retreated across the Yagari River, the 4th Cavalry Brigade made a rightward flank maneuver.