A conflict for primacy has arisen between…
1832 CE
In June 1832 Lavalleja's supporters attempt to kill Rivera and on July 3 the Montevideo garrison revolts, calling for Lavalleja to be made Commander-in-Chief.
Rivera, with the help of Argentine Unitarians, defeats Lavalleja on September 18, 1832 at Tupambaé, forcing Lavalleja to flee to the Brazilian province of Rio Grande do Sul.
Here Lavalleja will organize a new force with the support of Buenos Aires strongman Juan Manuel de Rosas and in March 1834 invade Uruguay, only to be defeated by Rivera once again.