Retreat_from_Laguna
After the invasion of the then province of Mato Grosso (nowadays Mato Grosso do Sul) by the forces of the Paraguayan Army in December 1864, starting the Triple Alliance War (together with the capture of the steamer Marquês de Olinda), one of the first Brazilian moves was to send a military land contingent to fight the invaders in Mato Grosso.
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In April 1865, a column left Rio de Janeiro, under the command of Colonel Manuel Pedro Drago, receiving reinforcements in Uberaba in Minas Gerais, covering more than two thousand kilometers by land until it reached Coxim in Mato Grosso, in December of that same year, which was found abandoned. The same was repeated when they reached Miranda in September 1866.
In January 1867, Colonel Carlos de Morais Camisão assumed command of the column, then reduced to 1,680 men, and decided to invade Paraguay proper, which he penetrated up to where nowadays is Bela Vista, in April. Too distant from the Brazilian lines, and without food for the troops, affected by cholera, typhus, and beriberi, the column of the Brazilian Army was forced to withdraw under constant attacks of the Paraguayan cavalry, events which all combined led to devastating losses amongst them. These circumstances were famously portrayed by the Viscount of Taunay, who was present as an engineer in the column, in his book A Retirada de Laguna [The Retreat from Laguna].[1]