N'oge agha dị n'etiti Brazil, Uruguay na Argentina megide Paraguay (1865<unk>1870), ndị Paraguay tinyere rọketi Congreve n'ọtụtụ agha gụnyere: Agha nke Riachuelo (June 11, 1865) mgbe ejiri rọketi ndị dị n'ala mee ihe megide ndị agha mmiri Brazil na-enweghị ihe ịga nke ọma; Agha nke Paso de las Cuevas (Ọgọst 12, 1865) mgbe ndị Paraguay jiri egbe na rọketi; ọgụ nke Corrales (Jenụwarị 31, 1866) mgbe ejiri rọketi Paraguay mee ihe megide ndị agha na ndị agha ịnyịnya agha Allied; Agha nke Tuyutí
(Mee 24, 1866) mgbe ndị agha Paraguay jiri ha wakpo ndị agha na-agba ịnyịnya na-aga n'ihu; agha Yatayti Corá (July 10, 1866) ebe Paraguay jiri abụọ launchers nke 68-paụnd rockets; ọzọ na "Yatayti Cora" (Jenụwarị 20, 1867) mgbe rọketi Paraguay kpatara ọkụ n'ogige ndị Argentina. Ndị agha mmiri nke Brazil jiri ha n'oge Agha nke Curupayti (September 22, 1866), na-anwa ibibi ogige trench nke Paraguay, mana roket ahụ dị mkpụmkpụ.