[img=http://upload.wikimedia.org/wikipedia/commons/thumb/7/7c/Bandera_de_la_Provincia_de_Mendoza.svg/100px-Bandera_de_la_Provincia_de_Mendoza.svg.png]
Nation Name: Unión de La Plata

If Location is not obvious from name (I.E Norway or Russia), describe location: Argentina, Paraguay and Uruguay.

Leader name: President Hipolito Yrigoyen

Population: Roughly 17 million

Population reaching military age annually (optional but helpful): 

Current military size:
Five Infantry Divisions 65,000 (two with an artillery brigade, one with an anti-air brigade) 
1 Mountain Infantry Division 16,000

Wartime military size (full mobilization): 2,000,000

Navy size (if applicable): 
Two Battleships
Five Heavy Cruisers
Three Light Cruisers
Three Destroyers
One Submarine

Respectable air force:
1 Squad of Interceptors
1 Squad of Naval Bombers

Military capabilities: Since the war with Brazil and the Federation of Paraguay and Uruguay La Plata has had the most powerful army in South America despite most of the soldiers being sent home after the war, they are all still ready to be recalled at a moment’s notice. Their navy is La Plata’s pride; it is the largest and most advanced in South America. The air force is fairly new and only really used as help for the navy.

History: From 1880 Argentina enjoyed a period of economic boom and great prosperity based on the export of wheat and cattle, allowing the nation to achieve a moderate industrialization. Argentina went to war with Bolivia in 1933, ostensibly over the attempted Bolivian annexation of Paraguay, which marked the beginning of the Great South American War. In 1934 Argentinean troops won a series of victories against the Bolivian forces and easily evicted them from occupied Paraguay, but in response Brazil declared war on Argentina, and her armed forces a rapid advance to the La Plata river, overrunning the tiny nation of Uruguay in the process. However, the Brazilian advance was halted at the La Plata as the war got bogged down in trench systems. In late 1934, Argentinean forces inflicted a further another series of devastating defeats on the Bolivians, and Bolivia was forced to sue for peace before the close of the year. This victory meant that Argentina was free to focus on Brazil, and they began a counterattack in 1935, which succeeded in routing the Brazilian troops and ejecting them into Curitiba. With her home lands threatened and her forces in disarray Brazil sued for peace.Shortly after this great success the governments of Paraguay and Uruguay were "federated" with Argentina, creating the Union of La Plata.
In 1936, La Plata is still facing problems, not least that the people of Paraguay and Uruguay don’t feel any connection to the Union and nationalism is ripe. Also an already resurgent Bolivia has begun to rearm, and Brazil’s currently weak government looks set to give way to a landslide victory by Getulio Vargas’ progressives.