The Argentinean Army
The early military history of Argentina is that of her struggle for independence, her wars with neighbouring States, her defence against the native Indian tribes and her civil wars, which, together, kept the country in an almost constant state of turmoil during the XIX century. Even before the nation became independent, the people of Buenos Aires fought side by side with Spanhish troops to repel a British invasion in 1807.
Between 1810-1870 Argentina could hardly be described as a modern State. The power was divided among several caudillos (regional rulers). Therefore, the Argentinean Army was merely a desire of some than a reality. Nevertheless, the need of a national force was felt by the  country's leadership in foreign affairs.
While the naval force under command of Buenos Aires were hopeless of overcoming Brazilian supremacy on the sea, the main hopes rode with the army. Expecting a short and glorious war in 1825, many rushed to join the colors against Brazil. They compensate their lack of training with enthusiasm.
The problems of logistic and supply, however, would plague the Argentinean Army until the end of the war against Paraguay in 1870. The support services labored hardly to overcome these deficiencies. But their efforts always seemed too little or too late.
Rosas Cavalry - Battle of Caseros 1852
Palermo Cavalry - Battle of Caseros 1852
Urquiza Cavalry - Battle of Caseros 1852
Rosas Infantry - Battle of Caseros 1852
Infantry Soldier - Triple Alliance War 1865