 The course of the conflict took a radical turn when the central government charged Luís Alves de Lima e Silva ( then Count and later Duke of Caxias ) with putting an end to the rebellion in late 1842 . Marques de Sousa probably met him during Caxias ' short trip to Rio Grande do Sul in 1839 as part of the Minister of War 's entourage . They subsequently maintained a friendly correspondence . Marques de Sousa was removed from his position over the 2nd Regiment of Light Cavalry and instead was given command of the 7th Brigade , which formed part of the 1st Division . The brigade consisted of his former 2nd Regiment of Light Cavalry and a National Guard cavalry corps . 
