Whakaotihia te rerenga e whai ake nei: I manakohia e nga Colorados nga Unitaros liberal Argentine i whakaraua, he maha o ratou i whakaruruhau ki Montevideo i te mea ko te perehitini Blanco a Manuel Oribe he hoa tata o te rangatira o Argentina a Manuel de Rosas. I te 15 o Hune 1838, he ope i arahina e te kaiarahi o Colorado a Rivera i whakaheke i te Perehitini Oribe, i rere ki Argentina. I whakapuakina e Rivera te pakanga ki a Rosas i te tau 1839. E 13 tau te roa o te pakanga, ā, ka mōhiotia ko te
Ko Guerra Grande (te Pakanga Nui).